Latest Articles from PhytoKeys Latest 11 Articles from PhytoKeys https://phytokeys.pensoft.net/ Thu, 28 Mar 2024 18:44:39 +0200 Pensoft FeedCreator https://phytokeys.pensoft.net/i/logo.jpg Latest Articles from PhytoKeys https://phytokeys.pensoft.net/ A new species of Typhonium (Araceae) from Vietnam https://phytokeys.pensoft.net/article/112973/ PhytoKeys 238: 119-126

DOI: 10.3897/phytokeys.238.112973

Authors: Hong Truong Luu, Nga Nguyen-Phi, Quoc Dat Nguyen, Hieu Cuong Nguyen, Hong Thien Van, Xuan Bach Nguyen-Le

Abstract: Typhonium obtusum is described as a new species endemic to Vietnam. It is unique in the genus in having an oblong-elliptic spathe limb with an obtuse apex and yellowish-greenish filiform staminodes with a down-curved acumen. The ecology, distribution and assessment of the conservation status of the new taxon, as well as a key to all known Typhonium species in Vietnam, are provided.

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Research Article Fri, 16 Feb 2024 10:25:37 +0200
A new species of Amorphophallus (Araceae) from northeastern Thailand https://phytokeys.pensoft.net/article/106466/ PhytoKeys 229: 131-138

DOI: 10.3897/phytokeys.229.106466

Authors: Wilawan Promprom, Wannachai Chatan, Pattana Pasorn, Narueset Prasertsri, Thinnakon Angkahad

Abstract: Amorphophallus sakonnakhonensis Chatan & Promprom, a new species from northeastern Thailand, is described and illustrated. The new species is most similar to A. harmandii Engl. & Gehrm. and A. linearis Gagnep., but it is distinguished by the combination of characters as follows: clear differences with A. harmandii are shorter style; disc-like, slightly smooth surface, concave centre, ca. 0.2 × 0.1 mm stigma; slightly cylindrical, slightly narrower upper part of staminate flower zone; slightly cylindrical to elongate-fusiform, erect or slightly erect, creamy white appendix. The clearly distinct morphology with A. linearis are disc-like, slightly smooth surface, concave centre, ca. 0.2 × 0.1 mm stigma; elliptic or obovate leaflet; 1–3 cm long, creamy white appendix. The preliminary conservation status was assessed, and the distinct characteristics of similar species were discussed.

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Research Article Thu, 13 Jul 2023 12:09:02 +0300
Typifications of some species names in Anthurium section Pachyneurium (Araceae) https://phytokeys.pensoft.net/article/65087/ PhytoKeys 178: 95-109

DOI: 10.3897/phytokeys.178.65087

Authors: Mel de Castro Camelo, Lívia Godinho Temponi, Simon Joseph Mayo, Marcus Alberto Nadruz Coelho, José Fernando A. Baumgratz

Abstract: During a taxonomic study of Anthurium sect. Pachyneurium, it was found that the names of four species required typification. Verification of the protologues and cited collections is discussed and typifications are proposed as follows: the illustration Schott Icones Aroideae No. 465 is designated as the neotype of A. affine Schott. A lectotype is designated for A. bonplandii G.S.Bunting since the holotype, cited in the protologue at MY, was not found there. An epitype is selected for A. solitarium Schott because the lectotype illustration of J.M.C. Vellozo (Flora Fluminensis t. 123) lacks sufficient detail to determine it unambiguously to species in A. sect. Pachyneurium. A lectotype is selected for A. glaziovii Hook.f., a synonym of A. solitarium.

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Research Article Thu, 27 May 2021 10:32:22 +0300
New species of Anthurium Schott (Araceae) from the Kõkõi Eujã Natural Traditional Reserve of the Pacific coast, Cauca Department, Colombia https://phytokeys.pensoft.net/article/53303/ PhytoKeys 156: 73-79

DOI: 10.3897/phytokeys.156.53303

Authors: Jhon A. Sánchez-Taborda, Martin Llano-Almario, Alejandro Zuluaga-Tróchez

Abstract: The Kõkõi Eujã Natural Traditional Reserve was created in 2019 to protect the golden poison frog (Phyllobates terribilis Myers, Daly & Malkin, 1978) in the Cauca Department of Colombia. As part of the biodiversity inventory of the reserve a new species of Anthurium with scandent habit was discovered. The new species is endemic to Colombia and it is more similar to A. caldodsonii Croat, A. boekei Croat, and A. scandens (Aubl.) Engl., but differs by having widely lanceolate leaves with acuminate apex, cuneate base, and acrodromous venation with three pairs of basal veins.

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Research Article Fri, 21 Aug 2020 09:55:50 +0300
Colocasia kachinensis, a new species of Araceae from Myanmar https://phytokeys.pensoft.net/article/36769/ PhytoKeys 138: 41-47

DOI: 10.3897/phytokeys.138.36769

Authors: Shi-Shun Zhou, Rui-Chang Quan, Ren Li, Qiang Liu, Jian-Tao Yin

Abstract: Colocasia kachinensis S.S. Zhou & J.T. Yin, is described and illustrated as a new species of Araceae from Kachin, Mynamar. The morphological characters are compared to those of other Colocasia species. Colocasia kachinensis is closely related to C. menglaensis J.T Yin, H. Li & Z.F. Xu, 2004, but differs from in having an erect stem, no stolons, smaller size, a different pattern of surface bristle distribution and male flowers 1–4-androus with stamens connate in truncate synandrium.

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Research Article Fri, 10 Jan 2020 14:29:05 +0200
Two new species of Chlorospatha section Orientales (Araceae) from western Andes in Colombia https://phytokeys.pensoft.net/article/38050/ PhytoKeys 135: 21-34

DOI: 10.3897/phytokeys.135.38050

Authors: Allison Muñoz-Castillo, Leonardo Guevara-Ibarra, Laura Clavijo, Alejandro Zuluaga

Abstract: Two new species of Chlorospatha (section Orientales) from the western slope of the Cordillera Occidental in the departments of Valle del Cauca and Choco (Colombia) are described here. The new species represent the first records of section Orientales for Colombia, which was previously known only from the eastern Andes in Ecuador. The two new species are similar to C. longipoda, C. hannoniae and C. boosii. Chlorospatha minima sp. nov. is differentiated by its small overall size (less than 30 cm tall), blade strongly inequilateral with smooth adaxial surface, and spadix less than 2.2 cm long. Chlorospatha silverstonei sp. nov. is differentiated by its large overall size (30–60 cm tall), 1–3 leaves per plant, and quilted adaxial blade surface.

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Research Article Wed, 6 Nov 2019 11:01:43 +0200
Ottelia fengshanensis, a new bisexual species of Ottelia (Hydrocharitaceae) from southwestern China https://phytokeys.pensoft.net/article/38531/ PhytoKeys 135: 1-10

DOI: 10.3897/phytokeys.135.38531

Authors: Zhi-Zhong Li, Shuang Wu, Chun-Yu Zhou, Yan Liu, Guang-Wan Hu, Samuli Lehtonen, Qing-Feng Wang, Jin-Ming Chen

Abstract: Ottelia fengshanensis, a new species (Hydrocharitaceae) from southwest China is here described and illustrated. Comparing its morphological features to putative close relatives O. guanyangensis, it has 3–4 flowers (vs. 2–5) each spathe, hexagonal-cylindric fruit, white styles (vs. yellow), green leaves (vs. dark green) and fruit tiny winged (vs. winged obviously). Molecular phylogenetic investigation of four DNA sequences (ITS, rbcL, trnK5’ intron and trnS-trnG) and the Poisson Tree Processes model for species delimitation (PTP) analysis, further resolves O. fengshanensis as a new species that is close to O. guanyangensis with distinct support.

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Research Article Wed, 30 Oct 2019 10:06:43 +0200
Recognition of the genus Thaumatophyllum Schott − formerly Philodendron subg. Meconostigma (Araceae) − based on molecular and morphological evidence https://phytokeys.pensoft.net/article/25044/ PhytoKeys 98: 51-71

DOI: 10.3897/phytokeys.98.25044

Authors: Cassia Mônica Sakuragui, Luana Silva Braucks Calazans, Leticia Loss de Oliveira, Érica Barroso de Morais, Ana Maria Benko-Iseppon, Santelmo Vasconcelos, Carlos Eduardo Guerra Schrago, Simon Joseph Mayo

Abstract: Philodendron subgenus Meconostigma has been a well-circumscribed group since 1829. Members of this group are easily distinguished by diagnostic morphological characters as well as by a distinct ecology and geographical distribution. Based on molecular, morphological and cytological evidence, we propose the recognition of P. subg. Meconostigma as a distinct genus, Thaumatophyllum Schott. We also present the necessary new combinations, an emended key and some nomenclatural and taxonomic corrections regarding 21 names of Thaumatophyllum.

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Research Article Wed, 2 May 2018 13:36:22 +0300
New vascular plant records for the Canadian Arctic Archipelago https://phytokeys.pensoft.net/article/5507/ PhytoKeys 52: 23-79

DOI: 10.3897/phytokeys.52.8721

Authors: Lynn J. Gillespie, Jeffery M. Saarela, Paul C. Sokoloff, Roger D. Bull

Abstract: The Canadian Arctic Archipelago is a vast region of approximately 1,420,000 km2, with a flora characterized by low species diversity, low endemicity, and little influence by alien species. New records of vascular plant species are documented here based on recent fieldwork on Victoria and Baffin Islands; additional records based on recent literature sources are mentioned. This paper serves as an update to the 2007 publication Flora of the Canadian Arctic Archipelago, and brings the total number of vascular plants for the region to 375 species and infraspecific taxa, an increase of 7.7%. Three families (Amaranthaceae, Juncaginaceae, Pteridaceae) and seven genera (Cherleria L., Cryptogramma R. Br., Platanthera Rich., Sabulina Rchb., Suaeda Forssk. ex J.F. Gmel., Triglochin L., Utricularia L.) are added to the flora, and one genus is deleted (Minuartia L.). Five species are first records for Nunavut (Arenaria longipedunculata Hultén, Cryptogramma stelleri (S.G. Gmel.) Prantl, Puccinellia banksiensis Consaul, Saxifraga eschscholtzii Sternb., Utricularia ochroleuca R.W. Hartm.)

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Research Article Thu, 25 Jun 2015 00:00:00 +0300
A reassessment of Anthurium species with palmately divided leaves, and a reinterpretation of Anthurium section Dactylophyllium (Araceae) https://phytokeys.pensoft.net/article/1543/ PhytoKeys 23: 41-54

DOI: 10.3897/phytokeys.23.4754

Authors: Thomas Croat, Monica Carlsen

Abstract: A reappraisal is made of the Anthurium Schott species with palmately divided leaves with 3 or more segments free to the base (i.e. palmatisect leaves), previously recognized as section Dactylophyllium Schott (Engler), as well as those species with 5 or more segments united at the base (i.e. palmatifid leaves), formerly placed in section Schizoplacium Schott (Engler). New molecular data indicates that several species (A. pedatum (Kunth) Schott, A. pedatoradiatum Schott, and possibly, A. podophyllum (Schltdl. & Cham.) Kunth) should be excluded from section Schizoplacium, and other species previously placed in that section cannot be separated from section Dactylophyllium. Thus, Anthurium section Schizoplacium is here synonymized within section Dactylophyllium and type species are designated for both groups. This paper also provides an updated description of section Dactylophyllium as here emended, listing the 24 accepted taxa now included (20 species and 4 varieties or subspecies), along with their geographic distributions.

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Research Article Mon, 10 Jun 2013 00:00:00 +0300
A synopsis of Harperocallis (Tofieldiaceae, Alismatales) with ten new combinations https://phytokeys.pensoft.net/article/1460/ PhytoKeys 21: 37-52

DOI: 10.3897/phytokeys.21.4859

Authors: Lisa Campbell, Laurence J. Dorr

Abstract: Ten new combinations from Asagraea, Isidrogaliva, and Tofieldia are proposed in the previously monospecific genus Harperocallis (Tofieldiaceae, Alismatales). As circumscribed here, the genus is restricted to the Americas. The majority of species occur in the Andes or the Guayana region of northern South America; more than half have restricted distributions, and H. flava is narrowly endemic in the Coastal Plain of the southeastern United States. A key to species, synonymies, distributions, representative specimens, and salient notes are presented. Populations of the species are mapped and H. robustior is illustrated. A neotype is selected for Tofieldia frigida, here considered a synonym of H. falcata. Several recent records of H. longiflora, previously known only from the type collected in 1902, are reported.

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Monograph Thu, 9 May 2013 00:00:00 +0300