Latest Articles from PhytoKeys Latest 100 Articles from PhytoKeys https://phytokeys.pensoft.net/ Fri, 29 Mar 2024 08:54:18 +0200 Pensoft FeedCreator https://phytokeys.pensoft.net/i/logo.jpg Latest Articles from PhytoKeys https://phytokeys.pensoft.net/ A new combination and synonym in Bupleurum (Apiaceae, Apioideae), based on morphological, molecular and cytological evidence https://phytokeys.pensoft.net/article/116877/ PhytoKeys 239: 239-253

DOI: 10.3897/phytokeys.239.116877

Authors: Li-Hua Wang, Shuo Li, De-Ning Zhang, Quan-Ru Liu

Abstract: Specimen examinations and field observations revealed that Bupleurum smithii var. parvifolium was distinctly different from B. smithii var. smithii in umbel, leaf, and fruit morphology, but was very similar to B. commelynoideum var. flaviflorum. Based on these morphological evidences, the present study re-examined the taxonomic status of these taxa through morphological, cytological, and phylogenetic analyses. The results showed distinguishable features in the width of middle leaves and bracteoles of B. smithii var. parvifolium compared to B. smithii var. smithii. Morphological variation between B. smithii var. parvifolium and B. commelynoideum var. flaviflorum was continuous and overlapping. Notably, the chromosome number of B. smithii var. parvifolium was 2n = 14 (x = 7), consistent with B. commelynoideum var. flaviflorum, whereas B. smithii var. smithii was 2n = 64 (x = 8). Additionally, phylogenetic analyses revealed B. commelynoideum var. flaviflorum nested within B. smithii var. parvifolium, and that both were distant from the B. smithii var. smithii and B. commelynoideum var. commelynoideum. Based on the evidence above, the differences between B. smithii var. parvifolium and B. smithii var. smithii extend beyond the level of intraspecific variation, and B. commelynoideum var. flaviflorum is considered to be identical with B. smithii var. parvifolium. Hence. A new combination and status, B. parvifolium (Shan & Y.Li) Q.R.Liu & L.H.Wang, comb. et stat. nov., is proposed. Furthermore, B. commelynoideum var. flaviflorum should be treated as a synonym of B. parvifolium.

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Research Article Thu, 21 Mar 2024 15:26:38 +0200
Gentiana mopanshanensis (Gentianaceae), a new species from Yunnan, southwest China https://phytokeys.pensoft.net/article/119800/ PhytoKeys 239: 215-228

DOI: 10.3897/phytokeys.239.119800

Authors: Tao Chen, Ting-Ting Wang, Shao-Yun Liu, Huan-Chong Wang

Abstract: Gentiana mopanshanensis, a new species of the family Gentianaceae is here described and illustrated. This species is presently known only from the Mopanshan Mountain, Yunnan Province, southwest China. Phylogenetic analysis based on ITS sequence data has shown that this new species is a member of the series Fimbriatae of the section Chondrophyllae. Morphologically, it mostly resembles G. mairei and G. panthaica, but differs clearly from the latter two species in the shape and size of the leaves, and the characters of the corolla throat and plicae.

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Research Article Wed, 20 Mar 2024 16:15:55 +0200
Ajania flavida (Asteraceae, Anthemideae), a distinct new species from southwestern China https://phytokeys.pensoft.net/article/119028/ PhytoKeys 239: 205-213

DOI: 10.3897/phytokeys.239.119028

Authors: Xiao-Rui Chi, Hai-Song Wu, Long Wang

Abstract: Ajania flavida, a new species from western Sichuan and eastern Xizang, China, is described and illustrated. It is readily assigned to A. sect. Ajania owing to its straw-colored, glossy involucres and marginally whitish scarious phyllaries. Within the section, it is distinct in being a shrub of 1−2 m in height, and in having creamy yellow florets. It is superficially similar to A. ramosa in A. sect. Phaeoscyphus, but can easily be distinguished by, among other characters, the plant height, color of the florets and margins of the phyllaries. In addition, we provide a distribution map of the new species.

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Research Article Tue, 19 Mar 2024 17:40:17 +0200
Taxonomic revision of Camellia (Theaceae) in Thailand https://phytokeys.pensoft.net/article/113878/ PhytoKeys 239: 29-57

DOI: 10.3897/phytokeys.239.113878

Authors: Dongwei Zhao

Abstract: Natural plants of Camellia (Theaceae) in Thailand are taxonomically revised with a key, a distribution map, descriptions, specimens examined, and figures of living plants and/or dry specimens. Nine taxa comprising seven species and two varieties are recognized, including C. caudata, C. connata, C. furfuracea, C. kissi, C. kissi var. confusa, C. laotica, C. sinensis var. assamica, C. suddeeana, and C. taliensis. Camellia caudata and C. laotica are new records to Thailand, and C. connata and C. suddeeana are endemic to the country. Formerly recorded C. pleurocarpa and C. tenii are excluded from Thai flora because of misidentification, and C. oleifera and C. sinensis are merely cultivated in the country. Morphological descriptions of C. connata and C. laotica are improved based on additional collections examined.

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Research Article Tue, 5 Mar 2024 15:59:41 +0200
Checklist of the genus Ridsdalea (Rubiaceae, Gardenieae) in Vietnam with description of the new species R. backanensis https://phytokeys.pensoft.net/article/113017/ PhytoKeys 239: 1-12

DOI: 10.3897/phytokeys.239.113017

Authors: Khoa Van Phung, Leonid V. Averyanov, Tatiana V. Maisak, Ludmila I. Krupkina, Hai Xuan Cao, Cuong Huu Nguyen

Abstract: The paper provides an identification key and an annotated list of all six species of the genus Ridsdalea J.T.Pereira & K.M.Wong (Rubiaceae, Gardenieae) recorded in the flora of Vietnam, along with data on their valid names, synonyms, types, and distribution. A new species, R. backanensis, discovered in the limestone area of Bac Kan Province (northern Vietnam), is described and illustrated. Detailed data on its characters, ecology, distribution, phenology, preliminary IUCN conservation status, and taxonomical notes are given. The newly discovered species is potentially interesting for cultivation as an ornamental tree that may be effectively used in garden and urban green architecture.

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Research Article Fri, 1 Mar 2024 18:25:22 +0200
An account of the genus Cistanche (Orobanchaceae) in Iraq and taxonomic considerations in the Middle East https://phytokeys.pensoft.net/article/116470/ PhytoKeys 238: 281-294

DOI: 10.3897/phytokeys.238.116470

Authors: Majed Aldughayman, Chris J. Thorogood, Abdulridha A. A. Al-Mayah, Julie A. Hawkins

Abstract: Species limits in the genus Cistanche are poorly understood, despite the plants’ long history of use in traditional herbal medicine and food across their range. Here we present a taxonomic account for the genus Cistanche in Iraq, where several taxa have been reported, most of them doubtfully. Using herbarium specimens, images of living material, and taxonomic literature, we found evidence of only one species occurring with certainty in Iraq: Cistanche tubulosa. We found no evidence for the occurrence of other Cistanche species in Iraq, including a putative new entity reported for the region. Our work highlights inconsistencies in the literature, and underscores the importance of examining multiple stable characters for delimiting species in the genus Cistanche.

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Research Article Wed, 28 Feb 2024 17:00:24 +0200
Ophiorrhiza reflexa (Rubiaceae), a new species from a karst region in Guangxi, China https://phytokeys.pensoft.net/article/116767/ PhytoKeys 238: 231-240

DOI: 10.3897/phytokeys.238.116767

Authors: Chao Shang, Jun Xue, Yanjie Yang, Xiaowen Liao, Quanru Liu, Lei Wu

Abstract: Ophiorrhiza reflexa, a new species from Guangxi, China, is described and illustrated in this study. It is morphologically similar to O. alatiflora due to the branched inflorescence, distylous flowers and the tubular-funnelform corolla with five longitudinal wings. The new species can be distinguished from O. alatiflora by its erect inflorescence, its smaller and equal-sized calyx lobes 0.5–0.7 mm long, its corolla tubes winged to the middle and the wings straight and its strongly reflexed corolla lobes at anthesis. Ophiorrhiza reflexa is assessed as least concern (LC) according to IUCN Categories and Criteria.

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Research Article Mon, 26 Feb 2024 16:35:25 +0200
Using scanning electron microscopy and molecular data to discover a new species from old herbarium collections: The case of Phlomoides henryi (Lamiaceae, Lamioideae) https://phytokeys.pensoft.net/article/117180/ PhytoKeys 238: 127-146

DOI: 10.3897/phytokeys.238.117180

Authors: Yue Zhao, Fei Zhao, Alan J. Paton, Jin-Fei Xiao, Ya-Ping Chen, Chun-Lei Xiang

Abstract: Phlomoides is one of the largest genera of Lamiaceae with approximately 150–170 species distributed mainly in Eurasia. In this study, we describe and illustrate a new species, P. henryi, which was previously misidentified as P. bracteosa, from Yunnan Province, southwest China. Molecular phylogenetic analyses revealed that P. henryi is found within a clade in which most species lack basal leaves. In this clade, the new species is morphologically distinct from P. rotata in having an obvious stem and, from the rest, by having transparent to white trichomes inside the upper corolla lip. In addition, micro-features of trichomes on the calyx and leaf epidermis can differentiate the new species from other species grouped in the same clade and a key, based on trichome morphology for these species, is provided. The findings demonstrate that the use of scanning electron microscopy can reveal inconspicuous morphological affinities amongst morphologically similar species and play an important role in the taxonomic study of the genus Phlomoides.

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Research Article Tue, 20 Feb 2024 10:30:35 +0200
Ligularia lushuiensis (Asteraceae, Senecioneae), a new species from northwestern Yunnan, China https://phytokeys.pensoft.net/article/117340/ PhytoKeys 238: 75-83

DOI: 10.3897/phytokeys.238.117340

Authors: Xiao-rui Chi, Hai-song Wu, Long Wang

Abstract: Ligularia lushuiensis, a new species from northwestern Yunnan, China, is described and illustrated. It was tentatively placed in L. sect. Ligularia ser. Ligularia on the basis of the pinnate-palmate leaf venation, racemose synflorescence and pappus which is as long as tubular corolla. Within the series, it appeared somewhat close to both L. lamarum and L. pseudolamarum. However, L. lushuiensis can be easily distinguished from the latter two species by, among other characters, the leaf margin, bract size, involucre shape and size, and number and width of ray florets. Morphologically, L. lushuiensis is also superficially similar to L. secunda but differs readily by having distally shortly yellowish and brownish puberulent stems, palmately-pinnately veined leaves regularly dentate at margin, scarious, brown and larger bracts, and larger ray laminae. In addition, a distribution map and a diagnostic key to Chinese species of L. ser. Ligularia are also provided.

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Research Article Wed, 7 Feb 2024 10:56:27 +0200
Hydrangea xinfeniae (Hydrangeaceae), a new species from Sichuan, China https://phytokeys.pensoft.net/article/114289/ PhytoKeys 238: 65-73

DOI: 10.3897/phytokeys.238.114289

Authors: Jian Ru, Wen-Bin Ju, Heng-Ning Deng, Bo Xu, Xiang Zhou, Chuan-Jiong Liu, Wei Huang

Abstract: Hydrangea xinfeniae W.B.Ju & J.Ru, a new species of Hydrangeaceae from Sichuan Province, China, is described and illustrated. The new species belongs to Hydrangea sect. Dichroa (Lour.) Y.De Smet & Samain, with its distinctive characteristic being the nearly superior ovary. It shares morphological similarities with H. yaoshanensis (Y.C.Wu) Y.De Smet & C.Granados, but can be distinguished by its hirsute trichomes densely covered on the branchlets, leaves, peduncles and pedicels, broadly elliptic to rectangular-elliptic leaf blade with nearly rounded base, coarse teeth leaf margins, 3–4 pairs of lateral veins, corymbose cyme with few and loose branches, lanceolate bract, the calyx tube and lobes margin with sparsely hirsute trichomes, adaxially glabrous and abaxially sparsely hirsute petal, outer whorl filaments are linear, inner ones are awl-shaped, glabrous styles, and the nearly superior ovary. H. xinfeniae sp. nov. currently known from only three relatively small populations of the type locality, and its conservation status is assessed as Data Deficient (DD).

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Research Article Fri, 2 Feb 2024 11:46:17 +0200
Melanoseris penghuana (Lactucinae, Cichorieae, Asteraceae), a new species from North-central Yunnan, China https://phytokeys.pensoft.net/article/116343/ PhytoKeys 238: 1-10

DOI: 10.3897/phytokeys.238.116343

Authors: Jia-Ju Xu, Ze-Huan Wang, Hong-Jin Dong, Qin Tian, Li Chen, Qian-Qian Zhong

Abstract: In this paper, we describe a new species, Melanoseris penghuana, from Mt. Jiaozi Xueshan located in North-central Yunnan, China. Despite its morphological similarities to M. likiangensis, M. penghuana exhibits distinct differences in leaf texture, shape of terminal lobes, indumentum of leaves, peduncles, and involucres, as well as the length of the achenes. Additionally, the conservation status of this species is classified as Vulnerable through data analysis from two field surveys.

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Research Article Thu, 1 Feb 2024 11:39:12 +0200
Lysimachia danxiashanensis, a new species of Primulaceae from Guangdong, China https://phytokeys.pensoft.net/article/114484/ PhytoKeys 237: 257-268

DOI: 10.3897/phytokeys.237.114484

Authors: Xing-Yue Zhang, Jing-Min Dai, Qiang Fan, Zai-Xiong Chen, Guang-Da Tang, Wen-Bo Liao

Abstract: Lysimachia danxiashanensis, a new Primulaceae species, endemic to the Danxia landscape in Guangdong Province, China, is described and illustrated. This new species is morphologically similar to L. pseudohenryi, L. phyllocephala, L. congestiflora and L. kwangtungensis, but it differs from the similar species by its purplish-red plants, petiole without wings, calyx with orange glandular and the corolla margin serrated on upper half with orange-red glandular punctates. This new species belongs to Lysimachia subgen. Lysimachia sect. Nummularia. Phylogenetic analysis confirmed that L. danxiashanensis is a distinct clade, based on the combined data of ITS and rbcL sequences. The conservation status of the new species was evaluated as Endangered (EN) according to IUCN Red List Categories and Criteria.

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Research Article Wed, 31 Jan 2024 17:00:18 +0200
Camellia zijinica (Theaceae), a new species endemic to Danxia landscape from Guangdong Province, China https://phytokeys.pensoft.net/article/114768/ PhytoKeys 237: 245-255

DOI: 10.3897/phytokeys.237.114768

Authors: Min Lin, Qin-Liang Ye, Zhi-Jian Zhang, Wen-Bo Liao, Qiang Fan

Abstract: A new species of the genus Camellia (Theaceae), Camellia zijinica, discovered in the Danxia landscape from Guangdong Province, China, is characterized and illustrated. Phylogenetic analysis based on chloroplast genomes suggested its affinity with C. drupifera, C. oleifera and C. fluviatilis, however, it morphologically differs from all of the latter by leaf shape and size. Phonologically, it most closely resembles C. microphylla, but can be distinguished from the latter by its young branchlets glabrous (vs. densely pubescent), fewer bracteoles and sepals, diverse leaf shape, midvein raised slightly with sparsely pubescent or glabrous (vs. prominently with densely pubescent) and leaf adaxially matt (vs. vernicose) when dried. By morphological and molecular analyses, Camellia zijinica represented a distinct new species of C. sect. Paracamellia.

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Research Article Wed, 31 Jan 2024 16:54:53 +0200
The identity of Bupleurum jeholense (Apiaceae) https://phytokeys.pensoft.net/article/111977/ PhytoKeys 237: 231-243

DOI: 10.3897/phytokeys.237.111977

Authors: Li-Hua Wang, Xue-Min Xu, Yi He, Quan-Ru Liu

Abstract: Bupleurum jeholense Nakai (Apioideae, Apiaceae), originally found in the Wuling Mountain of China, was initially described as a species but later treated as a variety of B. sibiricum Vest ex Spreng. However, researchers have recently found that it is more closely related to B. chinense DC. In this study, we conducted morphological and phylogenetic analyses as well as chromosome counting to determine the taxonomic status of B. sibiricum var. jeholense (Nakai) Chu. Our results showed that B. sibiricum var. jeholense and B. chinense share common features (i.e., bracteoles 5 and stem solid) that distinguish both from B. sibiricum var. sibiricum. The chromosome number of B. sibiricum var. jeholense was found to be the same as in B. chinense (i.e., 2n = 12), whereas the chromosome number of B. sibiricum var. sibiricum was 64. A phylogenetic tree based on complete chloroplast genome data revealed a close relationship between B. sibiricum var. jeholense and B. chinense. Finally, B. sibiricum var. jeholense and B. chinense were mainly found to differ in plant height, number of stems, and middle stem leaves. Based on this evidence, we propose a new combination: Bupleurum chinense var. jeholense (Nakai) Q.R.Liu & L.H.Wang.

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Research Article Wed, 31 Jan 2024 16:49:46 +0200
Taxonomic novelties in Haplopappus (Asteraceae, Astereae) from Chile https://phytokeys.pensoft.net/article/114461/ PhytoKeys 237: 201-218

DOI: 10.3897/phytokeys.237.114461

Authors: Nicolás García, Arón Cádiz-Véliz, Macarena Villalobos, Vanezza Morales

Abstract: Two new species of Haplopappus (Asteraceae) from central Chile are described in this article. Haplopappus colliguayensis sp. nov. is restricted to La Chapa hill, Colliguay, Valparaíso Region, and is most similar to H. undulatus but differs from the latter in its stem indumentum, leaf shape and margin, and synflorescence arrangement. Haplopappus teillieri sp. nov. has been recorded from four high-Andean localities in the Choapa, Petorca, Rocín and Aconcagua river basins, and is most similar to H. punctatus but differs from the latter in its leaf length and margin, number of peduncles per twig, width of outer phyllaries, number of ray florets per capitulum, and achene dimensions. Additionally, we propose the reinstatement of H. kingii in agreement with an exhaustive revision of type material and protologues, as well as the study of herbarium specimens. Haplopappus kingii is restricted to mountainous areas in the southern portion of the Atacama Region, and resembles H. parvifolius and H. retinervius but differs from both by its leaf margin and apex, besides additional differences from each. We provide morphological descriptions, field images, distributional maps, conservation assessments, and taxonomic notes for the three species treated, as well as illustrations for the novel taxa.

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Research Article Mon, 29 Jan 2024 20:26:37 +0200
A new species of Veronica (Plantaginaceae) from Western Iran https://phytokeys.pensoft.net/article/115003/ PhytoKeys 237: 219-230

DOI: 10.3897/phytokeys.237.115003

Authors: Mahfouz Advay, Dirk C. Albach, Moslem Doostmohammadi

Abstract: A new species, Veronica kurdistanica (Plantaginaceae), is described and illustrated. It grows on limestone cliffs in mountainous alpine areas of western Iran (Kurdistan province). The new species belongs to the species group of V. kurdica and is considered to be closely related to V. daranica, V. khorassanica and V. kurdica, with which the new species is compared. Molecular phylogenetic analysis of nrDNA (ITS) region confirms this relationship. Veronica kurdistanica is distinguished from the mentioned species by its glandular indumentum, length and shape of leaves and bracts, number of flowers per raceme, length and width of calyx and corolla, and size of capsules and seeds.

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Research Article Mon, 29 Jan 2024 18:02:17 +0200
Isodon xiaoluzhiensis (Lamiaceae, Nepetoideae), a new species from Yunnan, southwest China https://phytokeys.pensoft.net/article/117071/ PhytoKeys 237: 191-200

DOI: 10.3897/phytokeys.237.117071

Authors: Shi-Gang Li, Qiang-Chun Huang, Shao-Yun Liu, Chun-Lei Xiang, Huan-Chong Wang

Abstract: Isodon xiaoluzhiensis, a new species of the tribe Ocimeae in family Lamiaceae, is described and illustrated. The new species is known only from the type locality, Xiaoluzhi village in Luzhijang dry-hot valley of Yimen County, central Yunnan, southwest China. It is characterized by having a procumbent habit, gracile stems and branches, relatively small leaves and flowers, and the phenology of flowering in winter. The morphological comparisons with its putative closest relatives (I. adenanthus and I. hsiwenii) are also presented.

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Research Article Wed, 24 Jan 2024 18:23:42 +0200
Cyrtandra obliquifolia (Gesneriaceae), a new species from Kaua‘i, Hawaiian Islands https://phytokeys.pensoft.net/article/114704/ PhytoKeys 237: 141-151

DOI: 10.3897/phytokeys.237.114704

Authors: Kenneth R. Wood, Warren L. Wagner

Abstract: Cyrtandra obliquifolia K.R. Wood & W.L. Wagner (Gesneriaceae), a new shrub species known only from Kaua‘i, Hawaiian Islands, is described and illustrated with notes on its distribution, ecology, and conservation status. The new species is morphologically most similar to Cyrtandra wawrae C.B. Clarke but differs by its unique combination of oblique, non-peltate, auriculate leaf bases, more deeply divided calyx lobes, inflorescence with fewer flowers and lacking profusely umbellate cymes. Cyrtandra obliquifolia is known from only two localities which have undergone severe habitat degradation from landslides and invasive plants and animals and is determined to be Critically Endangered (CR) when evaluated under IUCN criteria.

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Research Article Mon, 22 Jan 2024 10:28:55 +0200
Vaccinium usneoides (Ericaceae), a new species from Yunnan, China https://phytokeys.pensoft.net/article/112658/ PhytoKeys 236: 187-195

DOI: 10.3897/phytokeys.236.112658

Authors: Yong-Jie Guo, Ting Zhang, Ji-Dong Ya, Wei Zhang, Xiu-Ying Shen, Zhou-Dong Han, Jing-Bo Ni, Jian-Yong Su, Yi-Hua Tong

Abstract: Vaccinium usneoides (Ericaceae), a new species from Fugong County of Yunnan Province, China is described and illustrated. This new species belongs to Vaccinium sect. Calcicolus and is most similar to V. brachyandrum, but differs in its branches hanging down, much smaller leaf blades, shorter inflorescences and pedicels, non-glandular tomentellate or densely pubescent inflorescence rachis and pedicels, densely white-pubescent hypanthium and pilose filaments.

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Research Article Thu, 21 Dec 2023 19:49:55 +0200
Erica L. (Ericaceae): homonyms amongst published names for African species and proposed replacement names https://phytokeys.pensoft.net/article/110498/ PhytoKeys 236: 157-178

DOI: 10.3897/phytokeys.236.110498

Authors: E. Charles Nelson, E. G. H. Oliver, Michael D. Pirie

Abstract: In support of ongoing taxonomic work on the large and complex flowering plant genus Erica (Ericaceae), we document nineteen pairs of homonyms representing currently used illegitimate names. We provide replacements for thirteen names and new typifications for five. We relegate five names to synonymy: Erica aemula Guthrie & Bolus under Erica distorta Bartl.; Erica armata Klotzsch ex Benth. under Erica umbrosa H. A. Baker; Erica capensis T.M. Salter under Erica turbiniflora Salisb.; Erica lanata Andrews under Erica flaccida Link; and Erica tomentosa Salisb. under Erica velutina Bartl. Finally, we suggest conservation of Erica aristata Andrews. The new names are: Erica adelopetala E.C. Nelson & E.G.H. Oliv. replacing Erica insignis E.G.H. Oliv.; Erica bombycina E.C. Nelson & Pirie replacing Erica niveniana E.G.H. Oliv.; Erica concordia E.C. Nelson & E.G.H. Oliv. replacing Erica constantia Nois. ex Benth.; Erica didymocarpa E.C. Nelson & E.G.H. Oliv. replacing Erica rugata E.G.H. Oliv.; Erica galantha E.C. Nelson & E.G.H. Oliv. replacing Erica perlata Benth.; Erica mallotocalyx E.C. Nelson & E.G.H. Oliv. replacing Erica flocciflora Benth.; Erica notoporina E.C. Nelson & E.G.H. Oliv. replacing E. autumnalis L.Bolus; Erica oliveranthus E.C. Nelson & Pirie replacing Erica tenuis Salisb.; Erica oraria E.C. Nelson & E.G.H. Oliv. replacing Erica spectabilis Klotzsch ex Benth.; Erica oresbia E.C. Nelson & E.G.H. Oliv. replacing Erica demissa Klotzsch ex Benth.; Erica poculiflora E.C. Nelson & E.G.H. Oliv. replacing Erica stenantha Klotzsch ex Benth.; Erica rhodella E.C. Nelson & E.G.H. Oliv. replacing Erica rhodantha Guthrie & Bolus; Erica supranubia E.C. Nelson & Pirie replacing Erica praecox Klotzsch.

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Research Article Wed, 20 Dec 2023 16:13:27 +0200
The first epiphytic species of Valeriana in the world: Valeriana rudychazaroi (Caprifoliaceae) https://phytokeys.pensoft.net/article/110905/ PhytoKeys 236: 145-156

DOI: 10.3897/phytokeys.236.110905

Authors: Antonio Francisco-Gutiérrez, Miguel Cházaro-Basáñez, Rodrigo Carral-Domínguez

Abstract: The currently known species of Valeriana are herbs, shrubs, small trees and vines. After 20 years without new species of Valeriana in Mexico, here is described and illustrated the first epiphytic species in the genus. The species was found growing on Quercus glabrescens trees of the cloud forests from central Veracruz in eastern Mexico. It is known and described from very few specimens in the type locality. The most morphologically similar Mexican species are the vines V. naidae and V. subincisa, it was compared. Conservation assessment classifies this species under the Critically Endangered CR B1+B2ab(ii,v) category of the IUCN Red List Criteria.

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Research Article Mon, 18 Dec 2023 17:52:05 +0200
Primula lizipingensis (Primulaceae), a new species from Sichuan, China https://phytokeys.pensoft.net/article/112169/ PhytoKeys 236: 135-143

DOI: 10.3897/phytokeys.236.112169

Authors: Wen-Bin Ju, Liu-Yang He, Qi Lan, Ying-Hao Wu, Heng-Ning Deng, Xing-Jin He, Xin-Fen Gao, Bo Xu

Abstract: A new species, Primula lizipingensis W.B.Ju, L.Y.He & X.F.Gao, found in Shimian County, Sichuan, China, is described and illustrated. It is morphologically similar to P. rhodochroa and P. socialis, but can be distinguished from them in having shorter plants covering with white farinose, leaf margin sharply dentate above the middle, the leaf blade becomes papery after drying, scapes obsolete, the bract linear-lanceolate to subulate, solitary at the base of the pedicel, and the white hairs present inside the corolla tube.

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Research Article Thu, 14 Dec 2023 10:09:38 +0200
Molecular and morphological evidence for a new species of Stachys (Lamiaceae) from Hunan, China https://phytokeys.pensoft.net/article/112741/ PhytoKeys 236: 121-134

DOI: 10.3897/phytokeys.236.112741

Authors: Ling Xue, Jia-Hua Cai, Min Zhan, Xiao-Ping Li, Lei Wu, Ya-Ping Chen

Abstract: Stachys yingzuijieensis, a new species from western Hunan, China, is described and illustrated. Molecular phylogenetic analyses based on three nuclear ribosomal DNA loci (ETS, ITS and 5S-NTS) recovered S. yingzuijieensis within the Stachys clade and as a sister group of S. arrecta. The two species can be easily distinguished by the morphology of lamina, corolla and nutlet. A key to all species of Stachydeae from China is also provided.

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Research Article Wed, 13 Dec 2023 15:40:01 +0200
Vaccinium chaozhouense (Ericaceae), a new species from East Guangdong, China https://phytokeys.pensoft.net/article/108732/ PhytoKeys 236: 113-119

DOI: 10.3897/phytokeys.236.108732

Authors: Yi-Hua Tong, Pei-Zhao Ye, Jian-Hong Ding, Wei-Chao Huang, Wei Huang, Jing-Bo Ni

Abstract: Vaccinium chaozhouense (Ericaceae), a new species from East Guangdong Province, China is described and illustrated. This new species is morphologically similar to V. wrightii by having flowers with persistent and leaf-like bracts, long pedicels, and white spherical-urceolate corollas, but is distinguished by having glandular trichomes on the abaxial surface of the leaf blade, shorter pedicels, sparsely pilose corolla ridges, and anther thecae longer than the tubules. A key to the new species and morphologically similar species is also provided.

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Research Article Fri, 8 Dec 2023 14:44:30 +0200
Melanoseris kangdingensis (Lactucinae, Cichorieae, Asteraceae), a new species reported from western Sichuan, China https://phytokeys.pensoft.net/article/113401/ PhytoKeys 236: 29-37

DOI: 10.3897/phytokeys.236.113401

Authors: Qian-Qian Zhong, Ze-Huan Wang, Jia-Ju Xu, Qin-Wen Sun

Abstract: Melanoseris kangdingensis, a new species native to western Sichuan, China, is firstly described and illustrated, and its conservation status is also assessed. It bears resemblance to M. macrantha and M. bracteata in terms of morphology; however, there are distinguishing characteristics in terms of their leaf structure, presence of bracts, hairiness of involucre, number of florets, and length of both stamen tube and achene’s beak.

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Research Article Fri, 24 Nov 2023 09:24:12 +0200
A taxonomic revision of Thai Fernandoa Welw. ex Seem. (Bignoniaceae) https://phytokeys.pensoft.net/article/112839/ PhytoKeys 235: 249-270

DOI: 10.3897/phytokeys.235.112839

Authors: Chatchai Ngernsaengsaruay, Nattanon Meeprom, Weereesa Boonthasak, Yanatshara Attasook, Raweewan Thunthawanich

Abstract: A taxonomic revision of Fernandoa Welw. ex Seem. (Bignoniaceae) in Thailand is presented. Two species, F. adenophylla (Wall. ex G. Don) Steenis and F. collignonii (Dop) Steenis, are enumerated with updated morphological descriptions, illustrations and a taxonomic identification key, together with notes on distributions, distribution maps, habitats and ecology, phenology, conservation assessments, etymology, vernacular names, uses, and specimens examined. The collection of Wallich Cat. 6502A from Myanmar, Ava at G [G00133642] is designated here as the lectotype of F. adenophylla in a second step lectotypification. F. collignonii has a conservation status of Endangered [EN]. The leaf, stem, and wood anatomy and pollen morphology of F. adenophylla are also reported in this study.

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Research Article Wed, 22 Nov 2023 16:11:53 +0200
Synotis jinpingensis (Asteraceae, Senecioneae), a new species with white ray florets from southeastern Yunnan, China https://phytokeys.pensoft.net/article/112230/ PhytoKeys 235: 199-210

DOI: 10.3897/phytokeys.235.112230

Authors: Liao-Chen Zhao, Ren Chen, Zhi-Yong Yu, Ming Tang, Qin-Er Yang

Abstract: Synotis jinpingensis (Asteraceae, Senecioneae), a new species from Jinping county in southeastern Yunnan province, China, is described and illustrated. This species is distinguished by having white ray florets in the genus Synotis, in which only species with yellow ray florets have been hitherto known. In habit and leaf shape S. jinpingensis is most closely similar to S. duclouxii, a species occurring in southwestern Guizhou, southern Sichuan and northeastern Yunnan, China, but differs, in addition to the color of ray florets, by having fewer lateral veins of leaves, obviously longer bracts of calyculus, and larger phyllaries. The membership of the new species within Synotis is strongly corroborated by evidence from floral micromorphology and phylogenetic analyses based on ITS sequence data. Color photographs of living plants, a distribution map, and provisional IUCN status of S. jinpingensis are provided.

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Research Article Mon, 20 Nov 2023 17:18:18 +0200
Lysimachia cavicola (Primulaceae), a new species from Guangxi, China https://phytokeys.pensoft.net/article/109528/ PhytoKeys 235: 189-198

DOI: 10.3897/phytokeys.235.109528

Authors: You Nong, Yuan Fang, Chuan-Gui Xu, Gui-Yuan Wei, Ke-Jian Yan, Ren-Chuan Hu, Yuan-Guang Wen

Abstract: Lysimachia cavicola (Subgen. Idiophyton, Primulaceae), a new species from Guangxi, China, is here described and illustrated based on morphological data. Although it shares similarities with L. microcarpa, L. fooningensis, and L. capillipes, there are distinguishing characteristics that set it apart. These include erect stems either solitary or in clusters of 1 to 2, herbaceous, terete, and densely glandular hairy. The leaves are either ovate or elliptical lanceolate, with inconspicuously reticulate veins. The petiole measures 2–4 mm in length covered with minute glandular hairy. The corolla is deeply parted, measuring 6–8 mm in length, with narrowly elliptic or narrowly oblong lobes that are 1–2 mm wide. The capsule is globose, measuring 2–3 × 2–3 mm, and possesses a chalky, brittle texture, which splits into 5-valved segments. The calyx of the plant appears yellowish-white during fruiting. This newly discovered species is endemic to limestone areas in Fengshan County, Guangxi, China.

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Research Article Fri, 17 Nov 2023 18:03:05 +0200
First record of the genus Camptotheca (Nyssaceae) in Vietnam and the lectotypification of C. acuminata https://phytokeys.pensoft.net/article/113267/ PhytoKeys 235: 129-136

DOI: 10.3897/phytokeys.235.113267

Authors: Zhen-Hua Zhu, Ngoc Bon Trinh, Thanh Son Hoang, Bo Li

Abstract: As a primary source of anticancer camptothecin, Camptotheca (Nyssaceae) is an economically valuable genus and has long been recorded as endemic to China. Here, Camptotheca is reported as a new record to the flora of Vietnam with the discovery of a wild population of C. acuminata from Lai Chau Province of northern Vietnam. Based on the consultation of relevant literature and type specimens of C. acuminata, a lectotype of the species is designated. Photographic illustrations, morphological description and a distribution map of C. acuminata is provided, and a key to all known species of Nyssaceae in Vietnam is presented, too.

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Research Article Wed, 15 Nov 2023 18:08:32 +0200
Taxonomic revision of the Erigeron acris group (Asteraceae) in Murmansk Region, Russia, reveals a complex pattern of native and alien taxa https://phytokeys.pensoft.net/article/111020/ PhytoKeys 235: 83-128

DOI: 10.3897/phytokeys.235.111020

Authors: Alexander N. Sennikov, Mikhail N. Kozhin

Abstract: Based on the evidence of morphology and a comprehensive revision of herbarium collections and field records, the taxonomy of the Erigeron acris group in Murmansk Region, European Russia, is completely revised. Its accepted diversity is increased from 2 to 8 taxa, including putative hybrids. The only native species, E. politus, is distributed in mountainous regions, along sea coasts and in the Kutsa River basin. Five species are alien: E. rigidus (previously confused with E. acris s.str.), E. acris s.str. (first recorded in the narrow taxonomic definition), E. brachycephalus (previously unrecorded), E. droebachiensis and E. uralensis (previously reported in error). Two major waves of the introduction of alien taxa are discovered, with different occurrences and species compositions. Regional and local dispersal by pomors (historical Russian settlers) occurred during their colonisation and traditional activities since the 12th century (archaeophytes or early neophytes); such alien taxa (E. rigidus, E. brachycephalus, and partly E. acris) are particularly common within the territory traditionally settled by Russian colonists but also found elsewhere along historical trade routes. Other alien species of the E. acris group (E. droebachiensis, E. uralensis, and partly E. acris and E. brachycephalus) colonised industrial areas in the 1960s–1990s as seed contaminants introduced during revegetation of slag dumps, stockyards, dams and channels. Putative hybrids between E. politus (native), E. rigidus and E. acris (aliens) are found in the places of co-occurrence. Updated nomenclature, synonymy and descriptions are provided for all accepted taxa.

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Research Article Wed, 15 Nov 2023 18:08:07 +0200
Mazus motuoensis (Mazaceae), a new species from Xizang, China https://phytokeys.pensoft.net/article/111092/ PhytoKeys 235: 69-79

DOI: 10.3897/phytokeys.235.111092

Authors: Wen-Bin Ju, Xiong Li, Heng-Ning Deng, Meng Li, Xing-Jin He, Xin-Fen Gao, Bo Xu

Abstract: Mazus motuoensis W.B.Ju, Bo Xu bis & X.F.Gao is a newly described species found in Xizang Autonomous Region, China. Morphologically, this species differs from all the other known Mazus species by having erect perennial herb form with a rhizome, presence of multicellular hairs, without basal leaves, opposite arrangement of stem leaves, and corolla lobes with erose-toothed margins. Molecular phylogenetic analysis using nuclear and cpDNA genes suggests that this new species occupies a basal position within Mazus. In conclusion, both morphological evidence and molecular phylogenetic analyses support that this species belongs to Mazus and represents an as-yet-unreported new species with distinct differences from other species within the genus.

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Research Article Tue, 14 Nov 2023 17:36:42 +0200
Pollen morphology of Clerodendrum L. (Lamiaceae) from China and its systematic implications https://phytokeys.pensoft.net/article/111516/ PhytoKeys 235: 53-68

DOI: 10.3897/phytokeys.235.111516

Authors: Xiakai Huang, Rui Wu, Zheng Xiong, Zhonghui Ma

Abstract: Pollen morphology of 26 taxa of Clerodendrum, as well as one species of Volkameria from China, was investigated through a scanning electron microscope (SEM). Pollen grains of Clerodendrum are monads, radiosymmetric and tricolpate, with medium or large size. The equatorial view of the pollen grains is spheroidal or subprolate and the polar view is (sub) circular or rounded triangular. The colpus membrane of the investigated taxa is sunken (rarely even). Five varying pollen types are delimited on the basis of exine sculpturing: (1) spine-tectum perforatum; (2) spine-tectum imperforatum; (3) microspine-tectum perforatum; (4) microspine-tectum imperforatum; and (5) obtuser spine. The results indicate that Clerodendrum is closely related to several genera in Lamiaceae, including Aegiphila, Amasonia, Kalaharia, Tetraclea, Volkameria, Oxera, Faradaya, and Hosea, as supported by previous phylogenic studies. Additionally, the conventional infrageneric classification of Clerodendrum based on inflorescence and leaf characters is not supported by the results. However, the palynological data can be used to identify some closely related species with similar external characteristics. In conclusion, the investigation of pollen morphology not only contributes novel data from palynology for Clerodendrum but also provides a basis for future comprehensive classification of this genus.

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Research Article Fri, 10 Nov 2023 18:57:05 +0200
Gesneria tuberifera (Gesneriaceae), a new lithophytic species from the Sierra de Bahoruco, Barahona Peninsula of southern Hispaniola (Dominican Republic) https://phytokeys.pensoft.net/article/110476/ PhytoKeys 235: 43-52

DOI: 10.3897/phytokeys.235.110476

Authors: John L. Clark, Teodoro Clase

Abstract: A narrowly endemic new species of Gesneria is described from the Sierra de Bahoruco in the Dominican Republic’s Barahona Peninsula of southern Hispaniola. Gesneria tuberifera J.L.Clark & T.Clase, sp. nov. differs from all other congeners by the presence of a tuber and tubular red corollas with yellow lobes. Images and a discussion are provided to summarize the presence of tubers in other Gesneriaceae and differentiate Gesneria tuberifera from congeners that share a lithophytic habit. Based on IUCN guidelines, a preliminary conservation status of Endangered (EN) is assessed for G. tuberifera.

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Research Article Fri, 10 Nov 2023 10:34:11 +0200
Paraboea zunyiensis (Gesneriaceae), a new species from north Guizhou, China https://phytokeys.pensoft.net/article/111412/ PhytoKeys 235: 21-29

DOI: 10.3897/phytokeys.235.111412

Authors: Tan Deng, Fang Wen, Da-Jun Xie, Ruo-Xun Wei, Lin He, Quan-Li Dou, Zheng-Min Qian, Ren-Bo Zhang

Abstract: A new lithophytic species, Paraboea zunyiensis T.Deng, F.Wen & R.B.Zhang (Gesneriaceae), inhabiting Karst rocks in northern Guizhou, China, is introduced and depicted in this study. It bears a resemblance to P. crassifolia (Hemsl.) B.L. Burtt, yet is distinguishable by its shorter filaments and staminodes, triangular ovate calyx segments, and ovaries surpassing the styles in length. Moreover, the phylogenetic tree constructed from nuclear DNA (ITS) and plastid DNA (trnL-F) data firmly support the differentiation of this novel species from P. crassifolia.

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Research Article Mon, 6 Nov 2023 18:02:27 +0200
Taxonomic revision of Camellia langbianensis (Theaceae) with four new synonyms https://phytokeys.pensoft.net/article/110218/ PhytoKeys 234: 275-281

DOI: 10.3897/phytokeys.234.110218

Authors: Dongwei Zhao

Abstract: Based on analysis of morphologically diagnostic characters, Camellia langbianensis, a yellow camellia native to southern Vietnam, is taxonomically revised to include four new heterotypic synonyms: C. decora, C. dongnaiensis, C. oconoriana and C. tadungensis. Camellia vidalii is retained in the synonymy of C. langbianensis. Updated description and distribution map for C. langbianensis are provided.

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Research Article Thu, 26 Oct 2023 11:48:02 +0300
Ardisia krauensis, a new species of Primulaceae (Myrsinoideae) from Peninsular Malaysia https://phytokeys.pensoft.net/article/106829/ PhytoKeys 234: 181-188

DOI: 10.3897/phytokeys.234.106829

Authors: Avelinah Julius, Suhaimi Syahida-Emiza, Timothy M. A. Utteridge

Abstract: Ardisia krauensis, a new species of Primulaceae from Peninsular Malaysia, is described and illustrated. The new species is assignable into subgenus (§) Pyrgus on account of specialised lateral reproductive branches bearing a terminal inflorescence subtended by foliose bracts. Morphologically, the new species mostly resembles Ardisia rigida in having elliptic leaves. However, the new species can be distinguished by the combination of its lateral veins number, the inflorescence branching pattern, the rachis and flower colour, and the stigma shape. Ardisia krauensis is found in an entirely protected habitat, thus, it is assessed as Least Concern (LC).

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Research Article Mon, 23 Oct 2023 18:56:34 +0300
Primula xilingensis (Primulaceae), a new species from Sichuan, China https://phytokeys.pensoft.net/article/108411/ PhytoKeys 234: 135-143

DOI: 10.3897/phytokeys.234.108411

Authors: Junjia Luo, Mingke Zhang, Xiaofeng Liu, Hui Chen, Tingyu Li, Xudong Ma, Ke Huang, Zhixi Fu

Abstract: A new species, Primula xilingensis K.Huang & Z.X.Fu, sp. nov. (Primulaceae), is described and illustrated. In gross morphology, it is clearly allied to section Minutissimae on account of having stolons, being glabrous, leaf rosette less than or equal to corolla, flower solitary and bract not swollen at base. The new species is easily distinguished by the combination of scape densely yellow farinose, leaf apex acute, rarely broadly obtuse, corolla pale purplish blue and style 3.0–6.0 mm above base of corolla tube, stamens reaching the corolla tube mouth in thrum flower. In addition, the distribution map, morphological comparison of related species and conservation status of the new species are also provided.

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Research Article Wed, 18 Oct 2023 10:57:16 +0300
Generic concepts and species diversity within the Gynoxyoid clade (Senecioneae, Compositae) https://phytokeys.pensoft.net/article/107750/ PhytoKeys 234: 61-106

DOI: 10.3897/phytokeys.234.107750

Authors: Belen Escobari, Thomas Borsch, Norbert Kilian

Abstract: The Gynoxyoid clade of the Senecioneae (Asteraceae) until now included the five genera Aequatorium, Gynoxys, Nordenstamia, Paracalia and Paragynoxys as diagnosed using selected morphological characters. In their pre-phylogenetic circumscription, the genera Aequatorium and Paragynoxys were considered to inhabit the northern Andes in contrast to Nordenstamia and Paracalia that occur in the central Andes. The most species-rich genus, Gynoxys, was believed to be distributed throughout the Andes. We use a recently established plastid phylogenomic framework that rendered Gynoxys paraphyletic to further evaluate the delimitation of genera in the Gynoxyoid clade. We examine the morphological variation of all members of the Gynoxyoid to identify characters potentially informative at genus level. This results in a matrix of eleven, mostly multistate characters, including those originally used to diagnose these genera. The ancestral character state inference displays a high level of homoplasy, but nevertheless supports the recognition of four genera. Aequatorium is characterised by white radiate capitula. Paracalia and Paragynoxys share white flowers and floral characteristics, such as flower opening and length of disc flowers lobes, as plesiomorphic states, but differ in habit (scandent shrubs vs. trees). Paracalia also retained white flowers, but its two species are characterised by the absence of outer phyllaries. The genera Gynoxys and Nordenstamia comprise species with yellow capitula which appear to be a derived feature in the Gynoxyoids. The genus Nordenstamia, with eight species, is synonymised under Gynoxys since molecular evidence shows its species nested within various parts of the Gynoxys subclade and the morphological variation of Nordenstamia falls well within that of Gynoxys. With the goal to assign all species to four genera (Aequatorium, Gynoxys, Paracalia and Paragynoxys), we assess the states for the eleven characters for all members of the Gynoxyoids and generate new ETS and ITS sequences for 171 specimens belonging to 49 species to further support their generic placement. We provide a taxonomic treatment for the four genera recognised here including amended diagnoses and morphological descriptions. Furthermore, a species-level taxonomic backbone is elaborated for all genera using electronic tools that list 158 currently accepted names and synonyms (209 names in total) with the respective protologue and type information, as well as notes on the current understanding of species limits. Eleven names are newly synonymised, two are lectotypified and eight are newly transferred to other genera.

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Research Article Tue, 10 Oct 2023 14:22:21 +0300
Panax siamensis J. Wen, a new species of the ginseng genus (Panax, Araliaceae) from northern Thailand https://phytokeys.pensoft.net/article/106289/ PhytoKeys 234: 51-59

DOI: 10.3897/phytokeys.234.106289

Authors: Jun Wen, Gary Krupnick, Hans-Joachim Esser

Abstract: We herein describe a new species, Panax siamensis J. Wen, from the tropical monsoon forests in northern Thailand. Panax siamensis is characterized by a combination of characters including horizontally elongated rhizomes with thick internodes, 3–5 whorled leaves each with 7–9 sessile and lanceolate leaflets, lanceolate bracteoles not persisting at the fruiting stage, 2-locular ovaries, and red fruits with a black top. The new species is most closely related to Panax zingiberensis C.Y. Wu & Feng from southeastern Yunnan province of China, sharing the character of sessile leaflets, but differing in that P. siamensis has well developed, elongated rhizomes (vs. compact, ginger-like rhizomes and rootstock in P. zingiberensis), and 7–9 leaflets (vs. (3–) 5–7 leaflets in P. zingiberensis). We also compare Panax siamensis to other related Asian Panax species, including P. assamicus Banerjee, P. bipinnatifidus Seem., P. pseudoginseng Wallich, and P. vietnamensis Ha & Grushv. The new taxon is preliminarily assessed as Vulnerable (VU D2), according to the IUCN Red List criteria. A taxonomic key is provided to facilitate the identification of P. siamensis and its close allies.

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Research Article Fri, 6 Oct 2023 19:25:21 +0300
A taxonomic synopsis of Heliotropiaceae and new combinations in Heliotropium from Thailand https://phytokeys.pensoft.net/article/103647/ PhytoKeys 232: 189-210

DOI: 10.3897/phytokeys.232.103647

Authors: Kanokorn Rueangsawang, Pranom Chantaranothai

Abstract: A synopsis of Heliotropiaceae in Thailand is presented and, as part of this, the taxonomic history, identification keys, distribution maps, herbarium specimen citations and diagnostic characters are provided. Two genera and 12 species are recognised and four new combinations are proposed of Tournefortia under the genus Heliotropium, namely H. hookeri, H. intonsum, H. montanum and H. ovatum. Two species are newly recorded in Thailand: Euploca ovalifolia and H. hookeri. The neotype and lectotype are designated here for Tournefortia montana and T. boniana, respectively.

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Research Article Thu, 21 Sep 2023 10:11:53 +0300
New species of Asclepias (Apocynaceae), Baphia (Leguminosae), Cochlospermum (Bixaceae) and Endostemon (Lamiaceae) from the Kalahari sands of Angola and NW Zambia, with one new combination in Vangueria (Rubiaceae) https://phytokeys.pensoft.net/article/110110/ PhytoKeys 232: 145-166

DOI: 10.3897/phytokeys.232.110110

Authors: David J. Goyder, Nina Davies, Manfred Finckh, Amândio Gomes, Francisco Maiato P. Gonçalves, Paulina Meller, Alan J. Paton

Abstract: Four new species are described from central and eastern Angola and adjacent NW Zambia. All occur in Kalahari sand savannas rich in endemic and more widely distributed geoxylic suffrutices. Despite being known from very few collections, the conservation status of one of these new species is assessed as Least Concern, as these grasslands are nutrient-poor, are in remote sparsely populated areas, and are not threatened with conversion to agriculture. The remaining three are treated as Data Deficient. In addition, one new combination is provided for Ancylanthos rubiginosus Desf. under Vangueria as V. rubiginosa (Desf.) Lantz is an illegitimate later homonym. We also make orthographic corrections to specific epithets commemorating Ilse von Nolde, a collector who made important collections from Quela in Malange in the 1930s.

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Research Article Wed, 20 Sep 2023 16:31:27 +0300
A new species of Iochroma Benth. (Solanaceae) from the eastern Andes of Colombia https://phytokeys.pensoft.net/article/108474/ PhytoKeys 232: 133-144

DOI: 10.3897/phytokeys.232.108474

Authors: Andrés Orejuela, Stacey D. Smith, Boris Villanueva, Rocío Deanna

Abstract: Iochroma orozcoae A.Orejuela & S.D.Sm., sp. nov. (Solanaceae) is described from the Andean forests of Cundinamarca in the eastern cordillera of Colombia. Iochroma orozcoae was first collected by the eminent Spanish priest and botanist José Celestino Mutis in the late part of the 18th century, but the specimens have lain unrecognised in herbaria for over 200 years. The species shares many features with its closest relative, Iochroma baumii S.D.Sm. & S.Leiva, but it differs from it in having small flowers with five corolla lobes and few inflorescences per branch, located near the shoot apex with 1 to 4 (–8) flowers, fruits that are greenish-yellow when ripe and its restricted geographic distribution. A description of I. orozcoae is provided, along with a detailed illustration, photographs of live plants, a comparison with closely-related species and a key to all Colombian species of Iochroma Benth. In closing, we emphasise the value of historical collections for the knowledge of biodiversity.

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Research Article Mon, 18 Sep 2023 14:55:41 +0300
A new combination and a new synonym of Gesneriaceae in China https://phytokeys.pensoft.net/article/108644/ PhytoKeys 232: 99-107

DOI: 10.3897/phytokeys.232.108644

Authors: Zheng-Long Li, Zhang-Jie Huang, Da-Wei Chen, Xin Hong, Fang Wen

Abstract: Didymocarpus subpalmatinervis W.T.Wang was shown to be conspecific with Petrocodon lithophilus Y.M.Shui, W.H.Chen & Mich.Möller, by checking original literature, examining specimens, tracing specimen collecting history, and conducting field surveys. The results show morphological characteristics and geographical distribution overlaps between these two species. The transfer of Didymocarpus subpalmatinervis to Petrocodon as a new combination with Petrocodon subpalmatinervis (W.T.Wang) F.Wen & Z.L.Li is proposed here, and P. lithophilus is synonymized with P. subpalmatinervis. Color photographs and essential information are also provided, including a detailed comparison of description, distribution, habitat, and the proposed IUCN conservation status.

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Research Article Fri, 15 Sep 2023 10:21:23 +0300
Ardisia recurvipetala (Primulaceae-Myrsinoideae), a new species from northern Peninsular Malaysia https://phytokeys.pensoft.net/article/103649/ PhytoKeys 232: 89-98

DOI: 10.3897/phytokeys.232.103649

Authors: Avelinah Julius, Mat Yunoh Siti-Munirah, Timothy M. A. Utteridge

Abstract: Recent fieldwork in Terengganu, Peninsular Malaysia, resulted in the collection of an endemic new species of Ardisia, described here as Ardisia recurvipetala Julius, Siti-Munirah & Utteridge. The species is a member of subgenus (§) Crispardisia on account of its vascularised glands (bacterial nodules) on the leaf margin and the terminal inflorescence on a specialised lateral branch subtended by a normal leaf (rather than a reduced bract-like leaf). Ardisia recurvipetala is unique amongst all members of §Crispardisia by having leaf margins with both vascularised glands and pustule-like structures and can be further distinguished from other Peninsular Malaysian members of this subgenus by the lamina raised between the leaf venation giving a somewhat bullate appearance, unbranched inflorescences, brownish-red pedicels and recurved corolla lobes, each with a creamy-white apex and a small pink patch at the base. Ardisia recurvipetala is known only from a single location in Terengganu and its conservation status is assessed as Data Deficient (DD).

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Research Article Wed, 13 Sep 2023 10:43:21 +0300
Mitreola quanruii (Loganiaceae), a new species from a karst region in Guangxi, China https://phytokeys.pensoft.net/article/108986/ PhytoKeys 232: 67-75

DOI: 10.3897/phytokeys.232.108986

Authors: Renchuan Hu, Xiaowen Liao, Binsheng Luo, Cheng Liu, You Nong, Lei Wu

Abstract: Mitreola quanruii , a new species from Guangxi, China, is described and illustrated in this study. It is morphologically similar to M. liuyanii because of the terete stems, creeping and branched at the base, the leaves which are pilose on both surfaces and the bilobed capsules with two erect horns. The new species can be distinguished from M. liuyanii by its taller habit, up to 20–50 cm tall, its linear leaves, 4–18 × 0.3–1 cm with acuminate apex and 8–10 pairs of lateral veins, its narrowly triangular stipules, its linear bracts, ca. 1.0 cm long and glabrous and its glabrous calyx. Mitreola quanruii is temporarily assessed as data deficient (DD) according to IUCN. The habitat of Mitreola quanruii is extremely fragile. Therefore, this species deserves close attention and protection.

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Research Article Fri, 8 Sep 2023 10:33:01 +0300
Stauranthera floribunda, a new species of Gesneriaceae from Yunnan, China https://phytokeys.pensoft.net/article/108996/ PhytoKeys 232: 59-66

DOI: 10.3897/phytokeys.232.108996

Authors: Fan Su, Xiao-Wei Qin, Yun-Lei Wang, Ren-Fen Wang, Chao-Yun Hao, Ke Tan

Abstract: Stauranthera floribunda F.Su, C.Y.Hao & K.Tan, a new species of Gesneriaceae from Yunnan, China, is described and illustrated here. It is morphologically similar to S. grandifolia Benth. in the shape of corolla, stigma, leaves and the number of stamens. However, it can be readily distinguished from the compared species by its dense cymes, leaf indumentum, lack of a corolla spur, calyx colour and stamen shape. The description of the new species, photographs, detailed descriptions, notes on etymology, distribution and habitat, as well as comparisons with morphologically similar species, are provided.

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Research Article Thu, 7 Sep 2023 10:56:25 +0300
A revision of the South American species of the Morelloid clade (Solanum L., Solanaceae) https://phytokeys.pensoft.net/article/100894/ PhytoKeys 231: 1-342

DOI: 10.3897/phytokeys.231.100894

Authors: Sandra Knapp, Tiina Särkinen, Gloria E. Barboza

Abstract: The Morelloid clade, also known as the black nightshades or "Maurella" (Maurella), is one of the 10 major clades within the mega-diverse genus Solanum L. The clade is most diverse in the central to southern Andes, but species occur around the tropics and subtropics, some extending well into the temperate zone. Plants of the group vary from herbs to short-lived perennials to perennial shrubs that are distinctly woody at the base, they have small mostly white or purplish white flowers and small juicy berries. Due to the complex morphological variation and weedy nature of these plants, coupled with the large number of published synonyms (especially for European taxa), our understanding of species limits and diversity in the Morelloid clade has lagged behind that of other clades in Solanum. Here we provide the last in a three-part series of monographic treatments of the morelloid solanums (see PhytoKeys Vols. 106, 125), treating the 62 species occurring in South America. This region is by far the most diverse in the clade, both in terms of species number and morphological diversity. We provide complete synonymy, nomenclatural details, including lecto- and neotypifications where needed, common names and uses, morphological descriptions, illustrations to aid identification both in herbaria and in the field, and distribution maps for all native, non-cultivated species. We include a key to all species, a synoptic character list for the species treated here and links to synoptic online keys for all species of the Morelloid clade. Preliminary conservation assessments following IUCN guidelines are also provided for all native species.

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Monograph Tue, 29 Aug 2023 11:18:27 +0300
Hedyotis longiramulis (Rubiaceae), a new species from south China https://phytokeys.pensoft.net/article/87675/ PhytoKeys 230: 271-287

DOI: 10.3897/phytokeys.230.87675

Authors: Yi-Da Xu, Ying Zhang, Rui-Jiang Wang

Abstract: Hedyotis longiramulis sp. nov. (Rubiaceae) is described from Guangdong Province, China. It is similar to H. caudatifolia but differs in having puberulent, more or less tetragonal and decussately sulcate juvenile stems, waxy leaf surface, short inflorescence peduncles, high length ratio of corolla lobe to tube, and subglobose capsules. The phylogenetic analysis reveals that H. longiramulis is sister to H. pubirachis. Dimorphism concerning pollen size was observed in the heterostylous flowers. The complete chloroplast genome of the new species comprises a typical quadripartite structure of 153,616 bp in length, with two inverted repeats of 25,457 bp, a large single-copy of 85,050 bp and a small single-copy of 17,652 bp. It contains 112 unique genes, including 79 protein-coding genes, 29 tRNA genes, and four rRNA genes, the GC content of the chloroplast genome is 32.4%. The new species is provisionally evaluated as “Least Concern” because it is common and well-protected in two Provincial Nature Reserves.

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Research Article Fri, 18 Aug 2023 18:44:24 +0300
A new lithophilous species of Gesneriaceae, Petrocodon rubrostriatus, from the karst area of South Yunnan, China https://phytokeys.pensoft.net/article/106358/ PhytoKeys 230: 289-299

DOI: 10.3897/phytokeys.230.106358

Authors: Ke Tan, Di-Ya Chen, Xi-Qiang Song, Ming-Xun Ren

Abstract: A new lithophytic species of Gesneriaceae, Petrocodon rubrostriatus K.Tan, X.Q.Song & M.X.Ren, sp. nov. from Lvchun County, South Yunnan, China, is described and illustrated here. It closest resembles P. mollifolius (W.T.Wang) A.Weber & Mich.Möller, but the new species is differentiated from it by red to brownish-red stripes in the yellow corolla throat and 4.5 mm long bract lobes, a ca. 10 mm long style, and staminodes inserted at 2.5–3 mm from the corolla base. The species is preliminarily assessed as ‘Critically Endangered’ (CR) according to IUCN criteria, since currently only one single locality is known with a few subpopulations on a fragmented limestone cliff, with fewer than 300 individuals.

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Research Article Fri, 18 Aug 2023 18:31:04 +0300
A new species of Schlegelia (Schlegeliaceae) from wet montane forest of Colombia and a key for the species of the genus https://phytokeys.pensoft.net/article/107398/ PhytoKeys 230: 257-269

DOI: 10.3897/phytokeys.230.107398

Authors: Gerardo A. Aymard Corredor, M. Alejandra Jaramillo

Abstract: In this paper we describe and illustrate Schlegelia longirachis a new species from montane forest remnants (1200--1900 m) in the Western slope of the Eastern Cordillera of Colombia (“Serranía de Las Quinchas” and Virolín county) in the Departments of Boyacá and Santander. A root-climbing liana, the new species is contrasted to S. fuscata, S. monachinoi and S. parviflora, the three most morphologically similar species of Schlegelia. This new species is differentiated from its putative close relatives by vegetative (texture, colour, pubescence and shape in leaves, bracts, bracteoles pedicel, calyx and corolla), inflorescences as well as floral characters (staminode absent). We provide an updated key to 24 known species of Schlegelia. For the identification key, S. fuscata and S. roseiflora are regarded here as different from S. parviflora. S. urbaniana is considered a synonym of S. axillaris, whereas S. fastigiata is separated from S. sulphurea as a recognizable species. Schlegelia has its center of distribution in Colombia, where 17 of the species are known to occur.

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Research Article Fri, 11 Aug 2023 14:22:03 +0300
Ixeridium sagittarioides (Asteraceae-Cichorieae) revisited: range extension and molecular evidence for its systematic position in the Lactuca alliance https://phytokeys.pensoft.net/article/107733/ PhytoKeys 230: 115-130

DOI: 10.3897/phytokeys.230.107733

Authors: Jian-Wen Zhang, Norbert Kilian, Jiang-Hua Huang, Hang Sun

Abstract: Our first record of the rare and scatteredly distributed Ixeridium sagittarioides for Guizhou, China, triggered a study to assess its systematic position. The species was placed in four different genera in the course of its taxonomic history and was recently treated with doubts as a member of Ixeridium in the Flora of China. Comparative morphological investigation and phylogenetic analyses based on the nuclear ribosomal DNA internal transcribed spacer (nrITS) and five non-coding plastid DNA regions (petD region, psbA-trnH, trnL-trnF, rpl32-trnL (UAG) and 5´rps16-trnQ (UUG) spacers) provided evidence that the species is not a member of Ixeridium and the Crepidinae but has evolved by ancient hybridisation of members of the Lactuca alliance (Lactucinae). It is reinstated as Lactuca sagittarioides and a comprehensive morphological description is provided, based on material from its entire range of distribution.

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Research Article Mon, 7 Aug 2023 16:05:10 +0300
Primula medogensis, a new species of Primulaceae from Tibet of China https://phytokeys.pensoft.net/article/107008/ PhytoKeys 230: 107-114

DOI: 10.3897/phytokeys.230.107008

Authors: Wen-Bin Ju, Heng-Ning Deng, Feng Liu, Xing-Jin He, Xin-Fen Gao, Bo Xu

Abstract: We present a description of a newly discovered species, Primula medogensis, found in southern Xizang, China. Additionally, we explore distinctive morphological characteristics that aid in its taxonomy. The new species belongs to sect. Cordifoliae and exhibits morphological similarities to P. baileyana and P. rotundifolia. However, it can be distinguished by its densely grayish-haired roots, petioles that are 3–7 times longer than the leaf blades, a short stock surrounded by straight and withered petioles, reniform leaf blades with revolute margins, scapes shorter than or equal to leave and both at flowering and in fruiting, flowers solitary on the scapes.

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Research Article Fri, 4 Aug 2023 17:57:44 +0300
Artemisia qingheensis (Asteraceae, Anthemideae), a new species from Xinjiang, China https://phytokeys.pensoft.net/article/101689/ PhytoKeys 229: 229-239

DOI: 10.3897/phytokeys.229.101689

Authors: Guang-Zhao Jin, Mariya Sheludyakova, Wen-Jun Li, Feng Song, Zhi-Bin Wen, Ying Feng

Abstract: Artemisia qingheensis (Asteraceae, Anthemideae), a new species from Qinghe County, Xinjiang, China, is described and illustrated. We investigated its phylogenetic position and relationships with 35 other species of Artemisia using whole chloroplast DNA sequence data. The molecular phylogenetic results and morphological evidence (multi-layered involucral bracts and homogamous capitula with bisexual flowers) showed that the new species belongs to Artemisia subgenus Seriphidium. A diagnostic table and discussion of morphological characters are provided to distinguish the new species from A. amoena, A. gracilescens, A. lessingiana and A. terrae-albae.

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Research Article Wed, 2 Aug 2023 10:47:21 +0300
Primulina pingnanensis, a new species of Gesneriaceae from Guangxi, China https://phytokeys.pensoft.net/article/103735/ PhytoKeys 229: 157-165

DOI: 10.3897/phytokeys.229.103735

Authors: Zheng-Long Li, Yan-Yun Kuang, Qing-Qing Xu, Wei-Chuen Chou, Xin Hong, Li Ding

Abstract: A new species of Primulina, P. pingnanensis, from the Guangxi Zhuangzu Autonomous Region, China, is described and illustrated here. It is morphologically similar to P. orthandra but has significant differences in the bracts, corolla tube and lobes shape, as well as in the indumentum of the outer surface of the corolla, the filaments, the staminodes and the anthers. Colorful photographs and essential information of this new taxon are also provided, including detailed taxonomic description, distribution, habitat, the comparison table, and the IUCN conservation status. We also discuss a validation of new combination P. crassifolia and Chirita crassifolia.

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Research Article Thu, 27 Jul 2023 10:38:05 +0300
Taxonomic and ecological remarks on Solenopsis bivonae species complex (Campanulaceae) https://phytokeys.pensoft.net/article/104324/ PhytoKeys 229: 77-111

DOI: 10.3897/phytokeys.229.104324

Authors: Salvatore Brullo, Cristian Brullo, Salvatore Cambria, Valeria Tomaselli, Alessandro Crisafulli, Giuseppe Siracusa, Pietro Minissale, Gianpietro Giusso del Galdo

Abstract: The populations usually attributed to Solenopsis bivonae (Tineo) M.B.Crespo, Serra & A.Juan are investigated from a taxonomical and morphological viewpoint. Within this species complex, four new subspecies occurring in Sicily and Calabria are recognized, such as subsp. bivonae, subsp. madoniarum, subsp. peloritana and subsp. brutia. In addition, a new species from Cyprus described as S. meikleana and S. bacchettae from Sardinia must be included in this group. The synonymy, typification, description, seed testa morphology, chorology, ecology, illustrations, conservation status, and examined specimens for each taxon are provided. Besides, the analytical keys, distribution maps, and phytosociological arrangement regarding these taxa are given too.

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Research Article Thu, 13 Jul 2023 12:08:08 +0300
Anthemis sect. Hiorthia (Asteraceae) on Kriti Island, Greece: high ploidy levels and a new species https://phytokeys.pensoft.net/article/102703/ PhytoKeys 229: 113-129

DOI: 10.3897/phytokeys.229.102703

Authors: Katerina Goula, Theophanis Constantinidis

Abstract: A morphological and karyological investigation of the Anthemis sect. Hiorthia representatives of Kriti (Greece) revealed that three different species are found on the island, all endemic, and each characterised by a different ploidy level based on the haploid series of x = 9. Anthemis abrotanifolia, the species with the widest distribution, is tetraploid with 2n = 4x = 36. A. samariensis, a local endemic of the Lefka Ori, was found being decaploid, with 2n = 10x = 90, the highest number ever recorded in Anthemis. The recently discovered population on Mt. Kedros (south-central Kriti) is morphologically distinct from all the Anthemis entities growing on Kriti; it also differs from the variable and widespread A. cretica group. It is here described as a new species, A. pasiphaes Goula & Constantinidis. It is a hexaploid, with 2n = 6x = 54. All chromosome numbers are reported for the first time. Polyploidy might have acted as a reproductive barrier among these perennial species, complementing isolation by spatial distance and evolutionary divergence. Further, it might have contributed adaptation advantages to these three predominately mountain species.

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Research Article Thu, 13 Jul 2023 12:07:27 +0300
When the absence of evidence is not the evidence of absence: Nasa (Loasaceae) rediscoveries from Peru and Ecuador, and the contribution of community science networks https://phytokeys.pensoft.net/article/100082/ PhytoKeys 229: 1-19

DOI: 10.3897/phytokeys.229.100082

Authors: Tilo Henning, Rafael Acuña-Castillo, Xavier Cornejo, Paúl Gonzáles, Edgar Segovia, Akira Armando Wong Sato, Maximilian Weigend

Abstract: Documentation of plant taxa has long been subject to the temporal and spatial selectivity of professional research expeditions, especially in tropical regions. Therefore, rare and/or narrowly endemic species are sometimes known only from very few and very old herbarium specimens. However, these taxa are very important from a conservation perspective. The lack of observations of living plants and confirmation of the actual occurrence of taxa hinders the planning and implementation of effective conservation measures. Community science networks have recently made tremendous contributions to documenting biodiversity in many regions across the globe. The rediscovery of six species of Nasa (Loasaceae) from Peru and Ecuador primarily via the platform iNaturalist, is reported.

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Research Article Fri, 30 Jun 2023 14:01:25 +0300
Clermontia hanaulaensis (Campanulaceae, Lobelioideae), a new, critically endangered species from Maui, Hawaiian Islands https://phytokeys.pensoft.net/article/100725/ PhytoKeys 227: 167-179

DOI: 10.3897/phytokeys.227.100725

Authors: Hank Oppenheimer, David H. Lorence, Warren L. Wagner

Abstract: Clermontia hanaulaensis H.Oppenheimer, Lorence & W.L.Wagner, sp. nov., a newly discovered, narrowly distributed endemic species, is herein described based on its morphological characteristics and illustrated with field photos and a line drawing. It is currently known only from the slopes of Hana‘ula, in Pōhākea Gulch, Mauna Kahālāwai, west Maui, Hawaiian Islands. It differs from all other species of Clermontia Gaudich. by the combination of its (2)3–4(–5) flowered inflorescence, violet colored perianth often suffused with creamy white streaks or sometimes creamy white with violet-purple irregular veins, (30)35–45(–50) mm long, perianth tube 15–25(–27) mm long, 9–10 mm wide, the lobes 20–26 mm long, (2–)3–3.5 mm wide, with petaloid calyx lobes 1/2–4/5 as long as the petals. A key to the Clermontia species and subspecies occurring on Maui is provided. Its habitat is described. Its conservation status is proposed as critically endangered (CR), and conservation efforts are discussed.

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Research Article Mon, 19 Jun 2023 18:26:57 +0300
Rediscovery of Primula brachystoma (Primulaceae), a rare species endemic to Gaoligong Mountain of Chinese-Burma frontier https://phytokeys.pensoft.net/article/103746/ PhytoKeys 227: 35-42

DOI: 10.3897/phytokeys.227.103746

Authors: Xiao-Qi Jiang, Na Zhang, Zhi-Kun Wu

Abstract: The rare Primula brachystoma W.W.Sm. is an endemic species confined to Gaoligong mountain of Chinese-Burma frontier, which has been rediscovered from the same region after nearly 100 years. In total, 11 specimens from Gaoligong Mountain have been found in the herbaria worldwide, since its first collection in 1920 by Farrer, Reginald John. Previously, this species was described as homostylous but our finding shows the species also exhibited heterostyly. A complete description of the species, the distribution, morphological comparison and identification key from closely related species are provided here. An assessment of its conservation status suggests that the species is ‘Endangered’ (EN).

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Research Article Mon, 29 May 2023 18:28:44 +0300
Primula jiaozishanensis (Primulaceae), a new species in Primula sect. Petiolares subsect. Davidii from Yunnan, China https://phytokeys.pensoft.net/article/103985/ PhytoKeys 227: 25-33

DOI: 10.3897/phytokeys.227.103985

Authors: Yuan Wu, Wu-Hai Yang, Zhi-Kun Wu

Abstract: Primula jiaozishanensis Z.K.Wu, W.H.Yang & Yuan Wu, a new species of Primulaceae is described and illustrated from Jiaozi Snow Mountain of Dongchuan District, Yunnan, China. Morphological evidence supports P. jiaozishanensis as a member of P. sect. Petiolares subsect. Davidii, which is characterized by firmly papery or leathery leaves, with veins impressed adaxially, often prominently raised and alveolate abaxially. The new species is characterized by having long and stout rhizomes, smaller leaves with short petioles, short or almost obsolete scape, and larger flowers. The distribution, phenology and conservation status of the new species are also provided.

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Research Article Mon, 29 May 2023 18:28:22 +0300
Primulina jiulianshanensis, a new species of Gesneriaceae from Jiangxi Province, China https://phytokeys.pensoft.net/article/96351/ PhytoKeys 226: 1-16

DOI: 10.3897/phytokeys.226.96351

Authors: Guo-Liang Xu, Li-Fen Liang, Di-Ya Chen, Zhi-Fang Jing, Xiao-Hai Zuo, Zheng-Yu Zuo, Fang Wen

Abstract: Primulina jiulianshanensis F.Wen & G.L.Xu, a new species of Gesneriaceae from Jiulianshan National Nature Reserve of Jiangxi Province, China, is described and illustrated here. Molecular evidence showed it was sister to P. wenii Jian Li & L.J.Yan, while the morphological observation found clear differences between them, petiole, both sides of leaf blades, adaxial surface of the calyx lobes, corolla inside toward the bottom, bract margins covered glandular-pubescent hairs in P. jiulianshanensis (vs. no glandular-pubescent hairs in P. wenii); lateral bracts 4–9 × ca. 2 mm, the central one 2–5 × 1–1.5 mm, adaxially glabrous but sparsely pubescent at apex (vs. lateral bracts 14–16 × 2.5–3.0 mm, the central one 10–12 × 1.3–1.6 mm, all adaxially pubescent); calyx lobes 8–11 × ca. 2 mm, each side with several brown serrate teeth at apex (vs. 14–15 × ca. 2.5 mm, margin entire); filaments and staminodes sparsely yellow glandular-puberulent (vs. white, glabrous).

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Research Article Tue, 9 May 2023 10:57:14 +0300
A new species of Argyreia (Convolvulaceae) from Yunnan, China https://phytokeys.pensoft.net/article/100646/ PhytoKeys 225: 199-209

DOI: 10.3897/phytokeys.225.100646

Authors: Mao-Lin Zhang, Yi He, Quan-Ru Liu

Abstract: Argyreia subrotunda, a new species from Yunnan Province, China, is described and illustrated. The new species resembles A. fulvocymosa and A. wallichii, but differs from these in the flowers with an entire or shallowly lobed corolla, as well as smaller elliptic bracts, lax flat-topped cymes and shorter corolla tubes. An updated key to the species of Argyreia from Yunnan province is also provided.

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Research Article Tue, 2 May 2023 11:55:34 +0300
Nomenclature and typification in Verbascum (Scrophulariaceae) from North Africa https://phytokeys.pensoft.net/article/99356/ PhytoKeys 225: 115-152

DOI: 10.3897/phytokeys.225.99356

Authors: Hamid Khamar, Jalal El Oualidi, Amina Ouazzani Touhami, Laure Civeyrel

Abstract: The progress of taxonomic work on native Verbascum L. taxa found in Morocco led to a search for reference specimens in various herbaria. This process was extended to the taxa found in the other four countries of North Africa (Algeria, Tunisia, Libya, and Egypt), which make up the southern shore of the Mediterranean basin. Numerous names were identified as needing typification or requiring corrections of their earlier lectotypifications in order to stabilize their nomenclature and provide a better definition of each taxon. As a result, lectotypes are now designated for 35 names, a neotype is proposed for V. ballii (Batt.) Hub.-Mor., and second-step lectotypes are proposed for V. faurei subsp. acanthifolium (Pau) Benedí & J.M.Monts. and V. pinnatisectum (Batt.) Benedí. Comments have been added for each typified name. Known isolectotypes are also mentioned whenever possible. Furthermore, some new combinations are proposed in this paper, namely V. longirostre var. antiatlantica (Emb.) Khamar, comb. nov., V. longirostre var. atlantica (Maire) Khamar, comb. nov., and V. longirostre var. hoggarica (Maire) Khamar, comb. nov.

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Research Article Thu, 27 Apr 2023 22:19:09 +0300
Petrocodon wui (Gesneriaceae), a new species from Guizhou, China https://phytokeys.pensoft.net/article/99660/ PhytoKeys 225: 41-51

DOI: 10.3897/phytokeys.225.99660

Authors: Ren-Bo Zhang, Tan Deng, Nan Li, Fang Wen

Abstract: Petrocodon wui F.Wen & R.B.Zhang (Gesneriaceae), a typically lithophyte occurring in the Danxia areas of north-western Guizhou, China, is described and illustrated as new to science. The new species shows overall similarity with P. chishuiensis Z.B.Xin, F.Wen & S.B.Zhou, which is also its sister species, based on molecular evidence. The new species can be distinguished from P. chishuiensis by the elongated rhizome, the relatively long indumentum on the peduncle, the shape, size and indumentum of calyx lobes, the location of the stamens in the corolla tube and the shape, size and indumentum of the stigma. We provide a diagnosis, detailed description, photographic images and a table with taxonomic notes to distinguish several other morphologically similar Petrocodon species.

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Research Article Wed, 19 Apr 2023 10:48:56 +0300
Taxonomy and distribution of Taraxacum sect. Erythrosperma (Asteraceae) in Poland https://phytokeys.pensoft.net/article/99463/ PhytoKeys 224: 1-88

DOI: 10.3897/phytokeys.224.99463

Authors: Mateusz Wolanin, Ewelina Klichowska, Iwona Jedrzejczyk, Monika Rewers, Marcin Nobis

Abstract: The dandelions from Taraxacum sect. Erythrosperma are taxonomically well distinguished and ecologically restricted to warm and sunlit habitats of steppes, dry and sandy grasslands, and distributed in temperate regions of Europe and Central Asia, with some being introduced to North America. Despite the long tradition of botanical research, the taxonomy and distribution of dandelions of T. sect. Erythrosperma is still underexplored in central Europe. In this paper, by combining traditional taxonomic studies supported by micromorphological, molecular and flow cytometry analyses as well as potential distribution modelling we shed light on taxonomical and phylogenetical relationships between members of T. sect. Erythrosperma in Poland. We also provide an identification key, species-checklist, detailed descriptions of morphology and occupated habitats as well as distribution maps for 14 Polish erythrosperms (T. bellicum, T. brachyglossum, T. cristatum, T. danubium, T. disseminatum, T. dissimile, T. lacistophyllum, T. parnassicum, T. plumbeum, T. proximum, T. sandomiriense, T. scanicum, T. tenuilobum, T. tortilobum). Finally, conservation assessments performed using the IUCN method and threat categories for all the examined species are proposed.

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Research Article Wed, 5 Apr 2023 18:04:33 +0300
Five new synonyms for Impatiens procumbens (Balsaminaceae) in China https://phytokeys.pensoft.net/article/97087/ PhytoKeys 222: 179-191

DOI: 10.3897/phytokeys.222.97087

Authors: Rong-Xin Huang, Tao-Hua Yuan, Yi Chen, Mei-Jun Li, Xin-Xiang Bai

Abstract: In the revision on the genus Impatiens L. in China, we found that there were synonyms amongst some species. Impatiens procumbens Franch. morphologically resembled I. reptans Hook.f., I. crassiloba Hook.f., I. ganpiuana Hook.f., I. atherosepala Hook.f. and I. rhombifolia Y.Q.Lu & Y.L.Chen. After a thorough morphological study, based on original literature, type specimens and field surveys, it was found that the above six species of Impatiens had no substantial differences in morphological characters and there was continuity in geographical distribution. Therefore, we determined that I. reptans, I. crassiloba, I. ganpiuana, I. atherosepala and I. rhombifolia are the synonyms of I. procumbens. At the same time, we present the color photographs, supplementary descriptions of morphology, and geographical distribution. The lectotype of I. procumbens and I. reptans are also designated here.

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Research Article Wed, 29 Mar 2023 17:36:53 +0300
Contributions to Ecuadorian butterworts (Lentibulariaceae, Pinguicula): two new species and a re-evaluation of Pinguicula calyptrata https://phytokeys.pensoft.net/article/98139/ PhytoKeys 222: 153-171

DOI: 10.3897/phytokeys.222.98139

Authors: Álvaro J. Pérez, Francisco Tobar, Kevin S. Burgess, Tilo Henning

Abstract: Comparatively few species of the insectivorous genus Pinguicula L. have been recognized in South America so far. In recent years, a number of narrowly endemic taxa from the Andes have been described that simultaneously refined the broad taxonomic concepts of the “historical” species. Here, we describe two striking new species from Southern Ecuador that further condense the circumscription of Pinguicula calyptrata Kunth. Pinguicula jimburensis sp. nov. and P. ombrophila sp. nov. are clearly beyond the taxonomic scope of the known species and consequently described as new to science. The deviating morphological features of the two new taxa are described and illustrated and the remaining morphological spectrum of P. calyptrata in Ecuador is outlined. The two new species add to the exceptional biodiversity in the Amotape-Huancabamba Zone and underline its importance as a biodiversity hotspot in urgent need of protection.

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Research Article Fri, 24 Mar 2023 19:08:53 +0200
Hoya spectatissima (Gentianales, Apocynaceae), a new species from Yunnan, China https://phytokeys.pensoft.net/article/99420/ PhytoKeys 222: 69-74

DOI: 10.3897/phytokeys.222.99420

Authors: Bine Xue, Erfeng Huang, Gang Yao, Guohua Zhao, Jiuxiang Huang

Abstract: Hoya spectatissima, a new species from Yunnan Province, China, is described and illustrated. Hoya spectatissima is morphologically similar to H. lyi, but can be easily distinguished from the latter by its succulent leaves that are 2‒4.5 cm long (vs. coriaceous leaves that are up to 9 cm long), corolla that is pink to pale pink (vs. yellowish-white) and corona lobes that are sub-rhombic in top view (vs. ovoid in top view).

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Research Article Tue, 21 Mar 2023 10:56:37 +0200
A new species of Hoya R.Br. (Apocynaceae, Asclepiadoideae) from the Philippines https://phytokeys.pensoft.net/article/98275/ PhytoKeys 222: 19-26

DOI: 10.3897/phytokeys.222.98275

Authors: Miguel David De Leon, Derek Cabactulan, Ryu D. Cuerdo, Michele Rodda

Abstract: Hoya medusa M.D.De Leon, Cabactulan, Cuerdo & Rodda, sp. nov. (Apocynaceae, Asclepiadoideae) is described from the Philippines. Even though numerous taxa with a shrubby habit from this area are known, it can be immediately separated because of its urceolate corolla and prominent elongated corona lobes. No other species in the genus possesses such a combination of characters.

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Research Article Mon, 20 Mar 2023 09:44:57 +0200
Solved at last: The Philippine endemic Psychotria philippensis is a synonym of Scyphiphora hydrophylacea (Rubiaceae, Scyphiphoreae) https://phytokeys.pensoft.net/article/97766/ PhytoKeys 221: 95-116

DOI: 10.3897/phytokeys.221.97766

Authors: Andreas Berger

Abstract: Psychotria philippensis (Rubiaceae) was described by Chamisso and Schlechtendal in 1829, was the first Psychotria name published for the Philippines and is currently considered a Philippine endemic. The name remained in a taxonomic limbo for almost two centuries as it was variously accepted, synonymized or considered obscure, probably because the type specimen in the Berlin herbarium was destroyed and no original material has survived or is currently known. A combined analysis of the information on morphology, type locality and ecology contained in the protologue and a review of relevant literature on the study of the name by various authors over the last two centuries finally clarified the identity of P. philippensis. The name is confirmed here as a synonym of the rubiaceous mangrove Scyphiphora hydrophylacea, as first proposed by Schumann, one of the authorities of the family in the late 19th century, and the application of P. philippensis is fixed by neotypification. This reduces the number of Philippine species of Psychotria by one, but fortunately, this is not happening through extinction, as has been the case with too many species of the highly endangered Philippine flora. In addition, the history of the discovery and study of S. hydrophylacea and its synonyms are described in detail, and one lectotype and one neotype are designated.

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Research Article Fri, 10 Mar 2023 21:05:33 +0200
Primula pingbaensis (Primulaceae), a new species from Guizhou, China https://phytokeys.pensoft.net/article/97948/ PhytoKeys 221: 85-93

DOI: 10.3897/phytokeys.221.97948

Authors: Na Zhang, Xiao-Qi Jiang, Zhi-Kun Wu

Abstract: Primula pingbaensis Na Zhang, X.Q.Jiang & Z.K.Wu, a new species of Primulaceae from Gaofeng Mountain of Pingba county, Guizhou, China, is described and illustrated. Morphological evidence supports P. pingbaensis as a member of P. sect. Petiolares on account of scape elongating, pedicels conspicuously thickening in fruit, and its capsule cracking irregularly round the top and crumbling away. Amongst the members of subsect. Davidii, the new species is characterized by having a uniquely smooth leaf blade due to inconspicuously raised veinlets and homostylous flowers with the style usually extending beyond the anthers. The distribution, phenology and conservation status of the new species are also provided.

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Research Article Fri, 10 Mar 2023 19:18:35 +0200
Hedyotis konhanungensis (Rubiaceae): A new species from the central highlands of Vietnam https://phytokeys.pensoft.net/article/95895/ PhytoKeys 221: 73-84

DOI: 10.3897/phytokeys.221.95895

Authors: Bui Hong Quang, Khang Sinh Nguyen, Tuan Anh Le, Le Thi Mai Linh, Quoc Luan Nguyen, Duy Hoang Vu Ngo, Lei Wu, Suman Neupane

Abstract: A new species of Hedyotis L. (Rubiaceae), Hedyotis konhanungensis B.H. Quang, T.A. Le, K.S. Nguyen & Neupane, is described and illustrated from the central highlands of Vietnam based on morphological and phylogenetic evidence. The new species belongs to the morphologically diverse tribe Spermacoceae (ca. 1000 species) of the family Rubiaceae, which is represented by 70–80 species in Vietnam. The phylogenetic analysis, based on four DNA regions (ITS, ETS, petD, rps 16), confirms the new species’ placement within the genus Hedyotis – one of the largest genera in the tribe, comprising ca. 180 species across Asia and the Pacific. Hedyotis konhanungensis is morphologically distinct from all southeastern Asian Hedyotis L. in its set of traits such as leaf type (shape and thickness), growth habit, and floral parts (color of inflorescence axis and the shape of calyx lobes). The new species shows similarities with Hedyotis shenzhenensis, H. shiuyingiae, and H. yangchunensis from China in its herbaceous habit, fleshy ovate leaf blades, and dark purple floral parts, but it is phylogenetically distinct and can be distinguished from them by the following combination of morphological traits: habit with slightly smaller stature (<25 cm), broadly ovate or deltoid stipules with cuspidate apex and entire margin, and ovate or nearly ovate calyx lobes.

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Research Article Thu, 9 Mar 2023 10:50:03 +0200
Lysimachia fenghwaiana (Primulaceae), a new species from Hunan Province, China https://phytokeys.pensoft.net/article/99556/ PhytoKeys 220: 75-82

DOI: 10.3897/phytokeys.220.99556

Authors: Hai-Fei Yan, Jia-Xiang Li, Tong-Jian Liu, Gang Hao

Abstract: A new species, Lysimachia fenghwaiana G.Hao & H.F.Yan (Primulaceae), from Hunan Province, China, is described and illustrated. This new species belongs to Lysimachia subgen. Lysimachia sect. Nummularia and is morphologically similar to L. crista-galli and L. carinata, but is distinctive in its leaf shape and arrangement of flowers. It can be further distinguished from L. crista-galli by the absence of calyx lobule spur, and from L. carinata by the black glandular striates in the corolla lobes, rather than punctate.

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Research Article Fri, 24 Feb 2023 18:52:08 +0200
Aeschynanthus smaragdinus F.Wen & J.Q.Qin (Gesneriaceae), a new species from Yunnan Province, China https://phytokeys.pensoft.net/article/98040/ PhytoKeys 220: 65-73

DOI: 10.3897/phytokeys.220.98040

Authors: Jia-Qi Qin, Rui-Feng Li, Yan-Ping Pang, Fang Wen

Abstract: Aeschynanthus smaragdinus F.Wen & J.Q.Qin, a new species of Gesneriaceae from the monsoon rain forest in Mangbang township, Tengchong City, Yunnan Province, China, is described and illustrated here. It morphologically resembles A. chiritoides C.B.Clarke in size, shape and hairs on the leaf blades. But it can easily be distinguished from the latter by the green corolla limb with brownish-red to maroon lower lobes. At the same time, the hairs of the pedicel and calyx lobes, the length of the staminode and the size of the seed grain can also help distinguish both. It is provisionally assessed as Data Deficient (DD), according to the IUCN Red List Categories and Criteria, because field surveys for this new taxon have not been completed.

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Research Article Fri, 24 Feb 2023 18:41:28 +0200
Veronica hongii (Plantaginaceae), a new species from Central China https://phytokeys.pensoft.net/article/96550/ PhytoKeys 220: 59-64

DOI: 10.3897/phytokeys.220.96550

Authors: Song-Zhi Xu, Qi-Liang Gan, Zun-Wei Ke, Zhen-Yu Li

Abstract: A new species Veronica hongii, from western Hubei Province, Central China is described and illustrated. The species is morphologically similar to V. henryi Yamazaki, but mainly differs in the glabrous plant, except pedicels, broadly ovate leaf blades, glandular-pubescent pedicels, obovate calyx lobes, smaller corolla, broadly ovate capsule and much smaller seeds.

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Research Article Fri, 24 Feb 2023 18:32:37 +0200
Taxonomic notes on the genus Deutzia (Hydrangeaceae) from Central China https://phytokeys.pensoft.net/article/96623/ PhytoKeys 220: 51-57

DOI: 10.3897/phytokeys.220.96623

Authors: Song-Zhi Xu, Qi-Liang Gan, Zhen-Yu Li

Abstract: Based on examination of syntype specimens deposited at P, the lectotype for the name Deutzia setchuenensis Franch. is designated here. By consulting literature and specimen records, the type locality of D. setchuenensis var. longidentata Rehder, ‘Chin-Ting shan’ in the protologue is likely a misspelling of ‘Chiuting shan’ which is now called Jiuding shan located in southern Mao county, Sichuan province. In addition, a new variety, Deutzia setchuenensis var. macrocarpa Q.L.Gan, Z.Y.Li & S.Z.Xu from western Hubei, Central China, is described and illustrated. It differs from other varieties of D. setchuenensis Franch. by the orange anthers, broader outer filaments, obtuse inner filaments, and larger fruits.

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Research Article Fri, 24 Feb 2023 18:21:55 +0200
A taxonomic revision of Keraunea, including three new species and its phylogenetic realignment with Ehretiaceae (Boraginales) https://phytokeys.pensoft.net/article/101779/ PhytoKeys 219: 145-170

DOI: 10.3897/phytokeys.219.101779

Authors: Peter W. Moonlight, Domingos Benício Oliveira Silva Cardoso

Abstract: Keraunea is an enigmatic genus of lianescent shrubs endemic to Brazil and found within the Caatinga and Mata Atlântica phytogeographic regions. When first published, Keraunea was included in the Convolvulaceae and there has been considerable recent disagreement about its true family placement on the Angiosperm tree of life. Based on further assessment of morphology and a new comprehensively-sampled combined phylogenetic analysis of nuclear and plastid genes from recently published DNA sequence data, we settle the position of the genus within the Ehretiaceae as sister to the Australian genus Halgania Gaudich. and provide an expanded family description. We recognize five species within Keraunea, three of them newly described here: K. brasiliensis Cheek & Simão-Bianchini, K. bullata Moonlight & D.B.O.S.Cardoso, sp. nov., K. capixaba Lombardi, K. confusa Moonlight & D.B.O.S.Cardoso, sp. nov. and K. velutina Moonlight & D.B.O.S.Cardoso, sp. nov. We also provide a full taxonomic revision of the genus, including a key, descriptions, map of geographical distribution and provisional IUCN threat assessments for all species.

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Research Article Mon, 20 Feb 2023 14:21:12 +0200
Paraphlomis yingdeensis (Lamiaceae), a new species from Guangdong (China) https://phytokeys.pensoft.net/article/97547/ PhytoKeys 219: 107-120

DOI: 10.3897/phytokeys.219.97547

Authors: Guo-Xin Guo, Wan-Yi Zhao, Ya-Ping Chen, Jin-Hai Xiao, Yuan-Qiu Li, Qiang Fan

Abstract: Paraphlomis yingdeensis (Lamiaceae), a new species from the limestone area in northern Guangdong Province, China, is described and illustrated. Phylogenetic analyses, based on two nuclear DNA regions (ITS and ETS) and three plastid DNA regions (rpl32-trnL, rps16 and trnL-trnF), suggest that P. yingdeensis represents a distinct species in Paraphlomis. Morphologically, P. yingdeensis is similar to P. foliata subsp. montigena and P. nana, but can be distinguished from the former by its densely villous lamina and calyx, not decurrent base of lamina and bristle-like-acuminate apex of calyx teeth, and distinguished from the latter by its significantly taller plant (15–20 cm vs. 1–5 cm) and larger lamina (6.2–16.5 × 4–11.5 vs. 2–7 × 1.5–4 cm), densely villous stem, lamina and calyx and yellow corolla.

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Research Article Wed, 8 Feb 2023 15:05:14 +0200
A taxonomic revision of Cynanchum thesioides (Apocynaceae) with two new synonyms https://phytokeys.pensoft.net/article/93514/ PhytoKeys 219: 11-25

DOI: 10.3897/phytokeys.219.93514

Authors: Cai-Fei Zhang, Dong-Juan Zhang, Miao Liao, Guang-Wan Hu

Abstract: Cynanchum thesioides, a species widely distributed in north-eastern Asia, is revised to include two new synonyms: Vincetoxicum sibiricum f. linearifolium, described from Shandong, China in 1877, but long neglected and Cynanchum gobicum, previously believed to be endemic to Mongolia. Typification for C. thesioides and all its synonyms is given, including lectotypification of V. sibiricum var. australe and V. sibiricum f. linearifolium. An updated description, three figures showing the diverse habitats, habits and variation in morphological characters, and a general distribution map are also provided.

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Research Article Thu, 19 Jan 2023 07:51:08 +0200
Sinosenecio pingwuensis (Asteraceae, Senecioneae), a new species from northern Sichuan, China https://phytokeys.pensoft.net/article/97485/ PhytoKeys 218: 109-116

DOI: 10.3897/phytokeys.218.97485

Authors: Xiu-Jiang Su, Wen-Qun Fei, Ding Zhao, Ying Liu, Qin-Er Yang

Abstract: Sinosenecio pingwuensis (Asteraceae, Senecioneae), a new species from Pingwu county in northern Sichuan, China, is described and illustrated. This species is distinguished in Sinosenecio by having leathery, glabrous, ovate or ovate-oblong leaves often pinnately-veined and solitary capitula 2.3–4.3 cm in diameter, a unique character combination hitherto never recorded in the genus. Two floral micromorphological characters (configuration of filament collar of stamens and anther endothecial cell wall thickenings) and achene surface features of the new species are reported. Color photographs of living plants and a distribution map are also provided for the new species.

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Research Article Thu, 12 Jan 2023 10:56:19 +0200
 Sinosenecio minshanicus (Asteraceae, Senecioneae), a new species from south-eastern Gansu and northern Sichuan, China https://phytokeys.pensoft.net/article/97475/ PhytoKeys 218: 79-91

DOI: 10.3897/phytokeys.218.97475

Authors: Xiu-Jiang Su, Wen-Qun Fei, Ding Zhao, Ying Liu, Qin-Er Yang

Abstract: Sinosenecio minshanicus (Asteraceae, Senecioneae), a new species from south-eastern Gansu (Wenxian and Zhugqu counties) and northern Sichuan (Pingwu county), China, is described and illustrated. This species is similar to S. rotundifolius, a species locally endemic to Songpan county in northern Sichuan, in having a scapigerous habit, orbicular leaves and solitary capitula, but differs by the presence (vs. absence) of stolons and by having thinner rhizomes (ca. 2 mm vs. more than 5 mm in diameter), stems proximally sparsely fulvous arachnoid or glabrescent (vs. densely sericeous-villous) and obscure (vs. conspicuous) main veins on adaxial surface of leaves. The chromosome number of the new species is reported to be 2n = 60. Colour photographs of living plants in the wild and a distribution map are provided for the new species and S. rotundifolius. The geographical distribution of S. rotundifolius is also corrected, with the previous record of this species from south-eastern Gansu (Wenxian county) actually referring to S. minshanicus.

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Research Article Tue, 10 Jan 2023 20:43:00 +0200
Glossoloma magenticristatum (Gesneriaceae), a new species from the Cordillera Oriental of the Colombian Andes https://phytokeys.pensoft.net/article/97590/ PhytoKeys 218: 59-68

DOI: 10.3897/phytokeys.218.97590

Authors: David Hoyos, Laura Clavijo, John L. Clark

Abstract: A narrowly endemic new species of Glossoloma is described from the Cordillera Oriental of the northern Andes, in the Colombian departments of Caquetá and Huila. Glossoloma magenticristatum J.L.Clark, D.Hoyos & Clavijo, sp. nov. differs from most other congeners by a habit that is usually epiphytic with elongate scandent subwoody shoots, the presence of a magenta corolla tube, and a creased calyx formed by tightly appressed adjacent lobes. A brief summary of Gesneriaceae diversity in the Colombia departments of Caquetá and Huila is discussed with an emphasis on the old highway between Florencia and Guadalupe. The conservation status of G. magenticristatum is assessed as Endangered (EN) based on IUCN Criteria.

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Research Article Tue, 10 Jan 2023 20:41:16 +0200
Primula wolongensis (Primulaceae), a new species of the primrose from Sichuan, China https://phytokeys.pensoft.net/article/91161/ PhytoKeys 218: 47-57

DOI: 10.3897/phytokeys.218.91161

Authors: Xiong Li, Yue-Hong Cheng, Hong-Qiang Lin, Cheng Chen, Xin-Fen Gao, Heng-Ning Deng, Feng Yu, Plenković-Moraj Anđelka, Wen-Bin Ju, Bo Xu

Abstract: This paper describes and illustrates a new species of Primulaceae, Primula wolongensis sp. nov. from Wolong National Nature Reserve in Sichuan Province, China. It is very rare and currently only known from its type locality. The new species belongs to subsection Chartacea of the section Petiolares on account of lacking bud scales at flowering, being efarinose and having distinct petiolate leaves with more or less rounded lamina. The new species can be differentiated from other members of the subsection by leaf blade margin dentate, and leaf veins which are not raised, scape shorter than or equal to pedicels, yellow flowers and location of stamens of the corolla tube at thrum flower. Molecular phylogenetic analysis based on nuclear ribosome internal transcribed spacer (nrITS) demonstrated that P. wolongensis was sister to subgen. Auriculastrum. Primula wolongensis is currently known from a single location in Wolong Town, and its conservation status is assessed as Data Deficient (DD).

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Research Article Tue, 10 Jan 2023 20:40:22 +0200
Raphiocarpus taygiangensis (Gesneriaceae), a new species from central Vietnam https://phytokeys.pensoft.net/article/96511/ PhytoKeys 218: 19-27

DOI: 10.3897/phytokeys.218.96511

Authors: Cuong Huu Nguyen, Khoa Van Phung, Khang Sinh Nguyen, Leonid V. Averyanov, Vuong Ba Truong, Chu Van Tran, Hai Xuan Cao, Quan Ngoc Chu, Hau Bich Thi Vu, Thoa Kim Thi Pham

Abstract: Raphiocarpus taygiangensis, a new species of Gesneriaceae family discovered in Tay Giang District, Quang Nam Province, Central Vietnam, is here described and illustrated. The new species is diagnosed by the combination of its stem up to 2 m long, sericeous hairs on young stem, leaf petiole and adaxial mid-vein, sparsely and minutely serrate leaf margin, axillary inflorescence spreading along stem, sparsely long gland-tipped hairs on peduncle, pedicel, calyx, outside corolla and pistil, calyx 5-disparted from base, purplish white flower with purple stripes inside corolla tube, and dish-shaped stigma formed by 2 semi-orbicular lobes horizontally expanding. Distinct features of the new species and its morphologically closest congener, Rhaphiocarpus axillaris, are compared and discussed. The conservation status of the described species is estimated as Vulnerable (VU D2) according to the IUCN Red List Criteria.

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Research Article Tue, 10 Jan 2023 20:38:31 +0200
Solanum scalarium (Solanaceae), a newly-described dioecious bush tomato from Judbarra/Gregory National Park, Northern Territory, Australia https://phytokeys.pensoft.net/article/85972/ PhytoKeys 216: 103-116

DOI: 10.3897/phytokeys.216.85972

Authors: Tanisha M. Williams, Jonathan Hayes, Angela J. McDonnell, Jason T. Cantley, Peter Jobson, Christopher T. Martine

Abstract: A new species of functionally dioecious bush tomato of Solanum subgenus Leptostemonum is described. Solanum scalarium Martine & T.M.Williams, sp. nov., is a member of the taxonomically challenging “Kimberley dioecious clade” in Australia and differs from other species in the group in its spreading decumbent habit and conspicuously prickly male floral rachis. The species is so far known from one site in Judbarra/Gregory National Park in the Northern Territory. Ex situ crosses and confirmation of inaperturate pollen grains produced in morphologically cosexual flowers indicate that these flowers are functionally female and the species is functionally dioecious. The scientific name reflects the ladder-like appearance of the inflorescence rachis armature of male individuals, the stone staircase that provides access to the type locality at the Escarpment Lookout Walk, and the importance of maintaining equitable and safe access to outdoor spaces. The common name Garrarnawun Bush Tomato is proposed in recognition of the lookout point at this site, a traditional meeting place of the Wardaman and Nungali-Ngaliwurru peoples whose lands overlap in this area.

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Research Article Tue, 20 Dec 2022 15:47:20 +0200
Lysimachia coriacea (Primulaceae, Myrsinoideae), a new species from Chongqing, China https://phytokeys.pensoft.net/article/91488/ PhytoKeys 215: 87-94

DOI: 10.3897/phytokeys.215.91488

Authors: Hai-Fei Yan, Ya Huang, Hong-Jing Zhang, Si-Rong Yi

Abstract: A new species, Lysimachia coriacea, from Chongqing, China, is described and illustrated. It is assigned to subgen. Lysimachia sect. Nummularia ser. Paridiformes and resembles L. paridiformis var. stenophylla, but is characterised by smaller leathery leaves with black glandular striations near the margin. It is also similar to L. nanpingensis in its two to three pairs of leaves sub-whorled at the stem apices, but differs by smaller leathery leaves and densely glandular stem, petiole and pedicel, and calyx lobes with sparse black glandular stripes.

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Research Article Fri, 16 Dec 2022 15:59:18 +0200
Microchirita minor (Gesneriaceae), a new species from north-western Vietnam https://phytokeys.pensoft.net/article/90859/ PhytoKeys 215: 65-71

DOI: 10.3897/phytokeys.215.90859

Authors: Zi-Bing Xin, Rui-Feng Li, Stephen Maciejewski, Long-Fei Fu, Truong Van Do, Fang Wen

Abstract: Microchirita minor (Gesneriaceae), a new species from the limestone area in Son La Province, north-western Vietnam, is described here. The new species resembles M. hamosa, but it differs by the combination of corolla tube shape, stamens number and the length of pistil. Detailed morphological description, together with photographic plates, information on phenology, distribution, ecology and preliminary conservation status of the new species are presented.

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Research Article Thu, 15 Dec 2022 10:53:03 +0200
A new species of Diplostephium (Asteraceae, Astereae) from the Atacama Desert, Chile https://phytokeys.pensoft.net/article/89175/ PhytoKeys 215: 51-63

DOI: 10.3897/phytokeys.215.89175

Authors: Sergio T. Ibáñez, Mélica Muñoz-Schick, Rosa A. Scherson, Andrés Moreira-Muñoz

Abstract: A new species, Diplostephium paposanum S.T.Ibáñez & Muñoz-Schick, sp. nov., is described for Chile, extending the southern distribution of the genus. Its position within the genus was confirmed by morphological and molecular data, discussed here. The new species was found in a coastal environment, new to the genus, and is geographically far removed from the other Chilean species, which are from the Andes. The formation where it occurs, known as lomas, acts as a biodiversity refuge in hyperarid environments. The presence of D. paposanum in this environment contributes to the evidence of a floristic connection between the Atacama Desert and the Neotropical Andes.

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Research Article Tue, 13 Dec 2022 14:25:03 +0200
Morphological diversity of pistil stigmas and its taxonomic significance of representatives of holoparasitic Orobanchaceae from Central Europe https://phytokeys.pensoft.net/article/96263/ PhytoKeys 215: 1-25

DOI: 10.3897/phytokeys.215.96263

Authors: Karolina Ruraż, Renata Piwowarczyk

Abstract: The stigma is the terminal part of the carpel which receives pollen during the pollination process. Although the role of the stigmas in pollination is the same for all angiosperms, stigmas structures are very diverse. This study aimed to evaluate intraspecific, interspecific and intergeneric stigmas variability and then find differences of the stigma morphology amongst 24 holoparasitic Orobanche and Phelipanche species and provide new insights into its potential taxonomic value. This paper was also focused on selecting the best diagnostic features that would be used for future stigma analysis in other species of Orobanchaceae. These analyses were conducted with fresh, dry and fixed material using stereomicroscopy from different locations from Central Europe. Twenty-one quantitative or qualitative morphological features were analysed. This study highlights the variation of stigma morphology and characters which are useful to improve the taxonomic understanding of problematic taxa. Thus, two main types of stigmas were established, based on tested features: 1–oval, rarely hemispherical in shape, most often one-coloured with lobes separated in Phelipanche stigmas; 2–spherical to hemispherical, rarely oval, multi-coloured with partially fused or separated lobes in Orobanche stigmas. The best diagnostic features of the stigmas for distinguishing the Orobanchaceae are the type and subtype of stigma, the length and area of the stigma, the width of single lobes, the width in the middle part of the stigma, the length of upper and lower separation in the middle part between lobes and the angle between lobes in the upper and lower part. The morphological features of the stigmas are important criteria for distinguishing genera, sections and subsections, as well as related species. In this study, we present the first stigma morphological studies for the most numerous genera from the tribe Orobancheae and this paper may determine features possible to use in solving certain taxonomic problems and evolutionary relationships of the species.

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Research Article Tue, 6 Dec 2022 09:47:58 +0200
Centaurea lovricii, a new species of C. sect. Centaurea (Asteraceae) from Croatia https://phytokeys.pensoft.net/article/89404/ PhytoKeys 214: 97-114

DOI: 10.3897/phytokeys.214.89404

Authors: Sandro Bogdanović, Igor Boršić, Ivica Ljubičić, Salvatore Brullo, Gianpietro Giusso del Galdo

Abstract: A new species, Centaurea lovricii, is described and illustrated from the island of Vis (Dalmatia, Croatia). It occurs on northwest-facing calcareous cliffs near the sea, where it grows with several other rare endemic species. Centaurea lovricii is morphologically similar to C. glaberrima and C. divergens of C. sect. Centaurea, from which it differs in having more succulent leaves with larger and less incised leaflets, bigger capitula, larger phyllaries with more developed appendages and denser and undulate fimbriae, larger florets, bigger achenes, and longer pappus. Its morphological features, distribution, ecology, conservation status and taxonomic affinities are examined. In addition, a new iconography and lectotypification for C. glaberrima and C. divergens is provided.

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Research Article Wed, 30 Nov 2022 15:23:55 +0200
Impatiens chenmoui (Balsaminaceae), a new species from southern Yunnan, China https://phytokeys.pensoft.net/article/94898/ PhytoKeys 214: 83-95

DOI: 10.3897/phytokeys.214.94898

Authors: Zheng-wei Wang, Qi Wang, Ru-hua Xu, Yu Zhang, Xiao-chen Li

Abstract: Impatiens chenmoui (Balsaminaceae), a new species from southern Yunnan, China, was described and illustrated based on morphological and molecular evidence. This new species is morphologically most similar to Impatiens oblongata Ruchis. & Niet, but can be distinguished by 7–9 pairs of leaf veins, glabrous perianth, obovate upper petal, and capsule with trichome.

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Research Article Wed, 30 Nov 2022 10:57:18 +0200
Argostemma ehuangzhangense (Rubiaceae), a new species from Guangdong, China https://phytokeys.pensoft.net/article/89276/ PhytoKeys 214: 75-82

DOI: 10.3897/phytokeys.214.89276

Authors: Zhong-Cheng Liu, Jia Liu, Wan-Yi Zhao, Qiang Fan, Hua-Gu Ye, Lei Wang, Wen-Bo Liao

Abstract: Argostemma ehuangzhangense, a new Rubiaceae species from E’huangzhang Nature Reserve, Guangdong Province, China, is here described and illustrated. A morphological comparison between the new species and its putative relatives, A. lamxayanum, A. laotica and A. verticillatum, is presented. The new species is mostly similar to A. laotica, but they can be distinguished from each other since Argostemma ehuangzhangense presents solitary flower (vs. 2-flowered inflorescences), flower lobes 4 (vs. 5) and anthers opening by longitudinal slits (vs. apical pores). In a preliminary IUCN Red List status of Argostemma ehuangzhangense this species is assigned as Vulnerable (VU).

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Research Article Wed, 30 Nov 2022 10:55:48 +0200
A new synonym of Enkianthus perulatus (Ericaceae) in East Asia, based on morphological and molecular evidence https://phytokeys.pensoft.net/article/94294/ PhytoKeys 214: 61-74

DOI: 10.3897/phytokeys.214.94294

Authors: Hua Liang, Lu Jiang, Danqi Li, Yi Yang, Dengmei Fan, Zhiyong Zhang

Abstract: Enkianthus calophyllus was once treated as a synonym of E. serrulatus. However, field observations indicate that E. calophyllus is distinct from E. serrulatus but resembles E. perulatus in flowers, leaves, fruits and seeds. Hence, a taxonomic revision of these species was conducted based on morphological comparisons of flowers, leaves, fruits and seeds, as well as molecular analyses of nuclear ribosomal internal transcribed spacer (nrITS) and six plastid DNA markers (psbA-trnH, rpl32-trnL, trnL-trnF, rps16-trnQ, psbJ-petA and matK). The morphological and molecular results reject the synonymization of E. calophyllus with E. serrulatus, and instead show it to be placed in a clade with E. perulatus. Based on molecular evidence and a reassessment of the morphology we synonymize E. calophyllus with the older name E. perulatus.

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Research Article Fri, 25 Nov 2022 10:14:56 +0200
Oreocharis polyneura, a new species of Gesneriaceae from southern Yunnan, China https://phytokeys.pensoft.net/article/93901/ PhytoKeys 214: 7-15

DOI: 10.3897/phytokeys.214.93901

Authors: Yan-Xiong Gong, Hong-Bo Ding, Xiang-Shuai Yan, Fang Wen, Yao-Hua Tian, Yun-Hong Tan

Abstract: Oreocharis polyneura, a new species from southern Yunnan, China, is described and illustrated. It is morphologically similar to O. rhytidophylla by having more obvious lateral veins forming a crosslinked network on the adaxial surface of leaf blades, but can be distinguished by having more lateral veins (12–15 pairs vs. 7–9 pairs) of leaf blades, shorter corolla tubes (the length ratio of corolla tube to corolla lobes = 1.2–2.9 vs. 3.4–6) and shorter pistils (6–8 mm long vs. 27–30 mm long). In addition, a detailed morphological description, a photographic illustration, the distribution and phenology of the new species are presented.

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Research Article Tue, 22 Nov 2022 17:23:00 +0200
Artemisia calcicola (Asteraceae, Anthemideae), a new species from karst region in Guizhou, southwestern China https://phytokeys.pensoft.net/article/96203/ PhytoKeys 213: 161-167

DOI: 10.3897/phytokeys.213.96203

Authors: Cheng-Sheng Li, Xiao-Rui Chi, Xin-Qiang Guo, Long Wang

Abstract: Artemisia calcicola (Asteraceae, Anthemideae), a new species from karst region in Shibing county, Guizhou province, southwestern China, is described and illustrated. The species can be readily assigned to A. subg. Artemisia in having fertile disk florets and glabrous receptacles. Within this subgenus, A. calcicola is distinguished by having (2- or) 3-pinnatipartite leaves and narrowly ellipsoid involucres 0.9–1.3 mm in diameter. It resembles A. annua to some extent, but differs immediately by the plant duration, stem and leaf indumentum, and involucre shape and size. A detailed description and distribution map of this species are also provided herein.

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Review Article Wed, 16 Nov 2022 10:42:32 +0200
Oreocharis qianyuensis, a new species of Gesneriaceae from Southwest, China based on morphological and molecular evidence https://phytokeys.pensoft.net/article/84349/ PhytoKeys 213: 119-130

DOI: 10.3897/phytokeys.213.84349

Authors: Jia-Wen Yang, Xin-Mei Qin, Jian Xu, Cong-Rui Li, Qi-Fei Ren, Mao-Qin Yuan, Qiang Zhang, Si-Rong Yi, Lei Cai

Abstract: Oreocharis qianyuensis, a new species of Gesneriaceae from Southwest, China, is described and illustrated based on morphological comparisons and molecular phylogenetic analyses. Phylotranscriptomic analyses of the new species in the context of a comprehensive phylogeny with dense sampling of 88% (111/126) of all species of the genus indicated that the new species was most closely-related to O. fargesii. The new species is morphologically similar to O. fargesii and O. nanchuanica in the shape, color and structure of flowers and the number of stamens, but differs in the leaf blade shape, margin and the indumentum characters of the inflorescence. Its morphological relationship with similar species is discussed, the detailed descriptions, colour photographs, distribution, as well as the IUCN threatened status based on the IUCN Red List Categories and Criteria are also provided.

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Research Article Tue, 15 Nov 2022 17:44:12 +0200
Pimpinella saxifraga subsp. rupestris (Apiaceae) – taxonomy and nomenclature of stenoendemic taxon from Karkonosze Mountains (Sudetes, Poland) https://phytokeys.pensoft.net/article/94302/ PhytoKeys 213: 111-118

DOI: 10.3897/phytokeys.213.94302

Authors: Paweł Kwiatkowski, Otakar Šída, Jacek Urbaniak

Abstract: Pimpinella saxifraga subsp. rupestris (Apiaceae) grows in a glacial cirque (Karkonosze Mountains, Sudetes, Poland) on a basalt substrate. Specimens of this species were first collected and described at the end of the 19th century, and their taxonomic distinctiveness and endemic status were determined by Weide in 1962. The typification of the name Pimpinella saxifraga subsp. rupestris is discussed. The protologue of the name and the diagnostic phrase are evaluated based on herbarium specimen. The lectotype is designated. The paper also presents diagnostic morphological features of this and a closely related species Pimpinella saxifraga subsp. saxifraga.

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Research Article Mon, 14 Nov 2022 17:41:53 +0200
Hansenia trifoliolata, a new species (Apiaceae) from Shaanxi, China https://phytokeys.pensoft.net/article/83632/ PhytoKeys 213: 79-93

DOI: 10.3897/phytokeys.213.83632

Authors: Qiu-Ping Jiang, Megan Price, Xiang-Yi Zhang, Xing-Jin He

Abstract: Hansenia trifoliolata Q.P.Jiang & X.J.He (Apiaceae), is described as new from Shaanxi Province, northwest China. The mericarp features of H. trifoliolata resemble H. himalayensis and H. phaea and molecular phylogenetic analyses (combining ITS and plastid genomes data) suggest that H. trifoliolata is closely related to the group formed by H. oviformis and H. forbesii. The new species H. trifoliolata has unique 3-foliolate leaves and differ from other Hansenia species in its leaves, umbel numbers and size. A comprehensive description of H. trifoliolata is provided, including habitat environment and detailed morphological traits.

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Research Article Mon, 14 Nov 2022 10:02:37 +0200
Morphological and molecular evidence gives insight into the taxonomic position of Peucedanum pubescens (Apiaceae, Selineae) https://phytokeys.pensoft.net/article/89784/ PhytoKeys 213: 19-33

DOI: 10.3897/phytokeys.213.89784

Authors: Jiao-Jiao Deng, Chang-Kun Liu, Song-Dong Zhou, Xing-Jin He

Abstract: In this study, morphological and molecular evidences were combined to determine the taxonomic position of Peucedanum pubescens Hand.-Mazz. Morphologically, Peucedanum pubescens is similar to the species of the genus Ligusticopsis in having fibrous remnant sheaths at the stem base, pinnate and linear coexisted bracts, strongly compressed dorsally mericarps, filiform median and lateral ribs, winged marginal ribs, numerous vittae in each furrow and commissure, but can also be easily distinguished from members of Ligusticopsis by its hispid fruit and linear-lanceolate bracteoles. Molecular phylogenetic analyses based on the single-copy protein-coding sequences (CDS) of plastomes and internal transcribed space (ITS) region showed that Peucedanum pubescens nested in the genus Ligusticopsis. As both morphological and molecular data supported the inclusion of Peucedanum pubescens within Ligusticopsis, the species is here transferred and the new combination, Ligusticopsis pubescens (Hand.-Mazz.) J.J.Deng, C.K.Liu & X.J.He, made.

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Research Article Wed, 9 Nov 2022 17:39:15 +0200
A new species of Encelia (Compositae, Heliantheae, Enceliinae) from the southern Baja California Peninsula https://phytokeys.pensoft.net/article/91190/ PhytoKeys 212: 97-109

DOI: 10.3897/phytokeys.212.91190

Authors: Jose Luis Leon-De La Luz, Isaac H. Lichter-Marck

Abstract: Here, we describe and illustrate Encelia balandra sp. nov., a new species of Compositae from the Baja California Peninsula. It is rare and known only from the rocky hills around Puerto Balandra and Pichilingüe, inside the bay of La Paz, in the State of Baja California Sur, Mexico. We determine that this new species has affinities with Encelia, based on its suffruticose woody habit, neuter ray florets and compressed disc cypselae with a cleft apex. The taxonomic placement within Encelia is supported by nuclear ribosomal sequence data from two regions, ITS and ETS. We also present detailed photographs, a conservation assessment and a dichotomous key to the Encelia of the southern Baja California Peninsula. Finally, we discuss the uniqueness of Encelia balandra amongst peninsular Encelia and its potential significance for understanding the enigmatic biogeography of this ecologically important genus.

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Research Article Fri, 4 Nov 2022 15:34:57 +0200