Latest Articles from PhytoKeys Latest 24 Articles from PhytoKeys https://phytokeys.pensoft.net/ Fri, 29 Mar 2024 18:01:39 +0200 Pensoft FeedCreator https://phytokeys.pensoft.net/i/logo.jpg Latest Articles from PhytoKeys https://phytokeys.pensoft.net/ 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
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
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
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
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
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
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
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
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
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
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
Further clarification on Androsace mollis Hand.-Mazz. (Primulaceae), with a description of a new species of Androsace https://phytokeys.pensoft.net/article/94037/ PhytoKeys 212: 73-83

DOI: 10.3897/phytokeys.212.94037

Authors: Yuan Xu, Hai-Fei Yan, Gang Hao

Abstract: The syntypes (H.R.E. Handel-Mazzetti 8896 and H.R.E. Handel-Mazzetti 9280) of Androsace mollis Hand.-Mazz. are identified as two separate taxa based on critical examinations of herbarium specimens and field investigation. While H.R.E. Handel-Mazzetti 8896 has been designated as the lectotype of A. mollis, we describe the other taxon, represented by H.R.E. Handel-Mazzetti 9280, as A. chimingiana Y.Xu & G.Hao sp. nov. The new species is morphologically similar to A. hookeriana Klatt and A. laxa C.M.Hu & Y.C.Yang but can be easily differentiated by its white corolla and obovate bracts.

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Research Article Thu, 3 Nov 2022 10:53:29 +0200
 Primula surculosa (Primulaceae), a new species from Yunnan, China https://phytokeys.pensoft.net/article/91133/ PhytoKeys 212: 29-35

DOI: 10.3897/phytokeys.212.91133

Authors: Yuan Xu, De-Ming He, Lin-Zhong Yang, Gang Hao

Abstract: A new species, Primula surculosa, is described and illustrated. In gross morphology, it is clearly allied to section Petiolares and is most similar to P. taliensis from the group Taliensis, but is distinctive in its indumentum in the throat of the corolla tube, and the markedly stoloniferous habit.

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Research Article Fri, 28 Oct 2022 07:24:14 +0300
Ardisia whitmorei (Primulaceae-Myrsinoideae), a new species from north east of Peninsular Malaysia https://phytokeys.pensoft.net/article/86647/ PhytoKeys 204: 35-41

DOI: 10.3897/phytokeys.204.86647

Authors: Avelinah Julius, Timothy M.A. Utteridge

Abstract: Ardisia whitmorei Julius & Utteridge, sp. nov. (Primulaceae-Myrsinoideae), a member of Ardisia subgenus Stylardisia on account of the style protruding from the closed petals prior to anthesis, is herein described and illustrated as a new species. This new species is easily distinguished by the combination of the inflorescences with a slender rachis branched to two orders, the corolla lobes are abaxially glabrous with usually up to only two gland-dots near the apex and the brochidrodromous secondary veins with double loops near the margin.

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Research Article Thu, 4 Aug 2022 10:31:44 +0300
 Primula xinningensis (Primulaceae), a new species from karst caves in Hunan, China https://phytokeys.pensoft.net/article/85231/ PhytoKeys 199: 155-166

DOI: 10.3897/phytokeys.199.85231

Authors: Wei Zhang, Yu Zhang, Jian Wen Shao

Abstract: Primula xinningensis Wei Zhang bis & J.W.Shao, a new species from Hunan Province, China, is described. Its leaf morphology is similar to the P. merrilliana complex and flower morphology similar to P. cicutariifolia, but it can be distinguished from the former by the black pollen sac, corolla lobes apex obviously emarginate and can be differed from the latter by cotyledon triangular obovate, plants densely covered with glandular hairs and special habitat (karst caves). The whole plastid genome of this new species is 151, 601–151, 630 bp in length. Based on the whole plastid genome sequences, phylogenetic trees revealed that the new species did not genetically relate to the above two mentioned morphologically similar species, but it was closely related to P. hubeiensis. Currently, only three populations were discovered within a small distribution area, thus, it is preliminarily considered as Vulnerable (VU) according to criteria of the IUCN Red List.

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Research Article Mon, 13 Jun 2022 14:07:25 +0300
Primula longipilosa (Primulaceae), a new species from Yunnan, China https://phytokeys.pensoft.net/article/81335/ PhytoKeys 194: 15-22

DOI: 10.3897/phytokeys.194.81335

Authors: Ze-Huan Wang, Yi Wang, Li Chen, Hua Peng, Zhi-Kun Wu, Guang Guo

Abstract: Primula longipilosa from SW Yunnan, China, is described as a species new to science and illustrated. The systematic placement of this new species is also discussed based on an nrITS molecular tree. It is morphologically most similar to P. mollis, but differs from the latter in its racemose inflorescence, green calyx tube, pink to pink rose corolla, stamens at 1/3 length above the base of the corolla tube and applanate globose capsule.

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Research Article Mon, 11 Apr 2022 09:54:42 +0300
Primula sunhangii (Primulaceae): a new species from Hubei, Central China https://phytokeys.pensoft.net/article/49137/ PhytoKeys 156: 103-112

DOI: 10.3897/phytokeys.156.49137

Authors: Jiao Sun, Dai-Gui Zhang, Xian-Han Huang, Komiljon Tojibaev, Jing-Yuan Yang, Heng-Chang Wang, Tao Deng

Abstract: This report provides a description of Primula sunhangii from the Shennongjia Forestry District, Hubei Province in Central China, which is categorized as a new species of the primrose family. Primula sunhangii is morphologically similar to P. involucrata Wall. ex Duby in terms of its simple umbel, efarinose, and prolonged bracts. However, P. sunhangii is distinguished by its glabrous sepal, short petiole (compare with blade) and cylindrical calyx and capsule. Molecular phylogenetic analysis based on nuclear and cpDNA genes demonstrates that P. sunhangii and P. involucrata are closely related. Combining genetic and morphological data, the recognition of P. sunhangii as a unique new species is supported.

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Research Article Fri, 21 Aug 2020 09:39:55 +0300
Two new species of Ardisia subgenus Tetrardisia (Primulaceae-Myrsinoideae) from Borneo https://phytokeys.pensoft.net/article/48573/ PhytoKeys 145: 139-148

DOI: 10.3897/phytokeys.145.48573

Authors: Avelinah Julius, Tadashi Kajita, Timothy M. A. Utteridge

Abstract: Ardisia argentiana and A. nagaensis from subgenus Tetrardisia are herein described and illustrated as new species. They are endemic to Borneo and the Indonesian province of Central Kalimantan and to the Malaysian state of Sarawak, respectively. Ardisia argentiana is unique in its linear-oblong leaves, with a long, acuminate-caudate apex, and finely serrulate margins, while A. nagaensis can be easily recognized by its elliptic-lanceolate leaves.

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Research Article Fri, 10 Apr 2020 11:14:18 +0300
Lysimachia fanii, a new species of Primulaceae from limestone area of Guangxi, China https://phytokeys.pensoft.net/article/34655/ PhytoKeys 130: 75-84

DOI: 10.3897/phytokeys.130.34655

Authors: Yun-Feng Huang, Li-Na Dong, Wei‑Bin Xu

Abstract: Lysimachia fanii, a new species of Lysimachia (Subgen. Idiophyton, Primulaceae), is described and illustrated from Guangxi, China based on morphological and molecular data. Lysimachia fanii differs from L. verbascifolia, L. rupestris and L. alpestris mainly by the habit being nearly rosulate, leaves congested at the apex of the rhizome, leaf blades spatulate to narrowly oblanceolate and flowers solitary. Phylogenetic analyses supported L. verbascifolia as sister to L. fanii. This new species is endemic to limestone areas in Liucheng county of Guangxi, China.

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Research Article Thu, 29 Aug 2019 10:59:07 +0300
Primula dongchuanensis (Primulaceae), a new species from northern Yunnan, China https://phytokeys.pensoft.net/article/35047/ PhytoKeys 130: 171-181

DOI: 10.3897/phytokeys.130.35047

Authors: Zhi-Kun Wu, Fu-Wei Zhao, Jia-Hui Chen, Yuan Huang

Abstract: Primula dongchuanensis Z.K.Wu & Yuan Huang, a new species of Primulaceae from Dongchuan of northern Yunnan, China, is described and illustrated. Both morphological and molecular evidence support P. dongchuanensis as a member of the sect. Proliferae. It is similar to P. aurantiaca W.W.Smith & Forrest, but is distinguished by having unique raceme inflorescences. Its distribution, phenology and conservation status are also provided.

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Research Article Thu, 29 Aug 2019 10:48:16 +0300
Lysimachia tianmaensis (Primulaceae), a new species from Anhui, China https://phytokeys.pensoft.net/article/23751/ PhytoKeys 98: 117-124

DOI: 10.3897/phytokeys.98.23751

Authors: Ying Wang, Wen Ma, Shoubiao Zhou, Kun Liu

Abstract: A new species of Lysimachia (Primulaceae), Lysimachia tianmaensis K. Liu, S.B. Zhou & Ying Wang sp. nov., is described and illustrated from Jinzhai County, Anhui, China. It is endemic to Dabieshan Mountain, China. The new species has yellow flowers and belongs to the subgenus Lysimachia section Nummularia series Grammicae. It is very easily distinguishable from other related species by having alternate leaves with brown patches beneath and an auriculated leaf base.

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Research Article Wed, 16 May 2018 11:56:35 +0300
Taxonomy and nomenclature of the polymorphic European high mountain species Androsace vitaliana (L.) Lapeyr. (Primulaceae) https://phytokeys.pensoft.net/article/10731/ PhytoKeys 75: 93-106

DOI: 10.3897/phytokeys.75.10731

Authors: Christopher J. Dixon, Walter Gutermann, Peter Schönswetter, Gerald M. Schneeweiss

Abstract: Androsace vitaliana (syn. Vitaliana primuliflora; Primulaceae) has been subject to several taxonomic treatments, whose conclusions ranged from a single species with numerous infraspecific taxa to several species usually without infraspecific taxa. Here, following molecular investigation, several taxonomic changes are made. A single species with the following infraspecific taxa is recognized: subsp. vitaliana (Pyrenees), subsp. cinerea (south-western Alps), subsp. lepontina (Pennine Alps), subsp. sesleri (south-eastern Alps), subsp. praetutiana (Apennines) and subsp. assoana (Iberian Peninsula excluding the Pyrenees), the last of which is divided into the four allopatrically distributed varieties assoana, centriberica, flosjugorum and nevadensis. Contrary to some previous assertions, all taxa are allopatric and, especially for subspp. vitaliana, cinerea and lepontina, where clear diagnostic characters are lacking, they can best be determined by their geographic origin.

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Research Article Tue, 6 Dec 2016 12:02:48 +0200