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A new freshwater species of Pinnularia (Bacillariophyta) from Hunan Province, China PhytoKeys (IF 1.4) Pub Date : 2024-01-23 San-Mei Xu, Bing Liu, Patrick Rioual, Man-Qi Yi, Yi-Dan Ma
This study describes a new species of Pinnularia, P. hupingensissp. nov., on the basis of light and scanning electron microscope images. Pinnularia hupingensissp. nov. is characterised by its linear valve outline, extremely divergent striae, and very large hexagonal central area occupying ca. 1/5–1/8 of the valve length. The primary and secondary sides of the valve and the internal proximal raphe
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Phylogenomics reveal Populus gonggaensis as a hybrid between P. lasiocarpa and P. cathayana (Salicaceae) PhytoKeys (IF 1.4) Pub Date : 2024-01-23 Wenyan Du, Yachao Wang, Dajun Xie, Enze Li, Yuran Bai, Ce Shang, Zhixiang Zhang
High levels of intra-specific polymorphism and frequent hybridisation make it difficult to define species and correctly apply their scientific names. Populus L. is a challenging genus with plentiful natural and artificial hybrids. This study is a part of the project ‘Flora of Pan-Himalaya’ and aims to determine the taxonomic identity of P. gonggaensis N. Chao & J.R. He and to find out whether it
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Phalaenopsis zhanhuoensis (Orchidaceae, Vandeae), a new species from Yunnan, China PhytoKeys (IF 1.4) Pub Date : 2024-01-22 Shiyu Qin, Hanchen Wang, Yajun Wang, Chongbo Ma, Zan Li, Boyun Yang, Xiaohua Jin
A new species of Orchidaceae, Phalaenopsis zhanhuoensis, from Xichou County, Yunnan, China, is described and illustrated. The novelty is close to P. taenialis, P. wilsonii, and P. stobartiana, but differs from them by having a distinct, fleshy anterior callus with a deeply lobed apex at the base of the labellum and lateral lobes of labellum reflexed and facing outward.
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Cyrtandra obliquifolia (Gesneriaceae), a new species from Kaua‘i, Hawaiian Islands PhytoKeys (IF 1.4) Pub Date : 2024-01-22 Kenneth R. Wood, Warren L. Wagner
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
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Taxonomic dissection based on molecular evidence of the Eriosyce curvispina complex (Cactaceae): identifying nine endemic species from Central Chile PhytoKeys (IF 1.4) Pub Date : 2024-01-22 Helmut E. Walter, Arón Cádiz-Véliz, Beatriz M. Meriño, Heidy M. Villalobos-Barrantes, Pablo C. Guerrero
Chile’s distinctive flora, geographical isolation, and complex topography collectively contribute to a notable endemic species diversity, particularly within central regions identified as critical areas for biodiversity conservation. The cactus genus Eriosyce, as currently circumscribed, encompasses seven sections, with Eriosyce sect. Horridocatus presenting a notably complex species group. This
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Hedysarum qilianshanense sp. nov. (Fabaceae, Hedysareae), a new species from the Qilianshan Mountains in Gansu, China PhytoKeys (IF 1.4) Pub Date : 2024-01-22 Pei-Liang Liu, Qian-Xi Guo, Jian-Qi Zhang, Lu-Lu Xun, Yuan Lu, Ming Yue
Hedysarum qilianshanensesp. nov. (Fabaceae, Hedysareae) is described and illustrated from the Qilianshan Mountains in Gansu, China. This new species is similar to H. przewalskii, but can be distinguished by its corolla being light purple to purple, standard 15–19 mm long, wings 14–16 mm long, keels 16–19 mm long, and the ovary and legume being glabrous. The new species can be easily distinguished
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Re-evaluating monotypic Eleutherostylis from New Guinea and the Moluccas and its inclusion in Grewia (Malvaceae, Grewioideae) PhytoKeys (IF 1.4) Pub Date : 2024-01-19 Laurence J. Dorr, Kenneth J. Wurdack
Morphological and molecular phylogenetic evidence indicate that Eleutherostylis Burret (Malvaceae, Grewioideae), a monotypic genus described from New Guinea, is best considered a synonym of Grewia L., a species-rich genus widespread across the Paleotropics and found in Africa, Arabia, Asia, Australia and the western Pacific. A new combination, based on E. renistipulata Burret, G. renistipulata (Burret)
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Aletris guangxiensis (Nartheciaceae), a new species from Guangxi, China PhytoKeys (IF 1.4) Pub Date : 2024-01-19 You Nong, Ke-Dao Lai, Yun-Rui Qin, Gui-Yuan Wei, Ke-Jian Yan, Chuan-Gui Xu, Zi-Yi Zhao, Ren-Chuan Hu, Yun-Feng Huang
Aletris guangxiensis Y. Nong & Y. F. Huang (Nartheciaceae), a new species from Guangxi, China, is described and illustrated. This new species is most similar to A. scopulorum, but it can be easily distinguished by its sparsely glandular, 5–18 cm long scape, glandular inflorescence axis, distinctly pedicellate flowers, sparsely glandular, 5–10 mm long pedicel, bract borne at base of pedicel, glabrous
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From morphology to molecules: A comprehensive study of a novel Derris species (Fabaceae) with a rare flowering habit and reddish leaflet midribs, discovered in Peninsular Thailand PhytoKeys (IF 1.4) Pub Date : 2024-01-15 Punvarit Boonprajan, Charan Leeratiwong, Yotsawate Sirichamorn
Derris rubricosta Boonprajan & Sirich., sp. nov., a new species of the genus Derris Lour. (Fabaceae) was discovered in Peninsular Thailand. The overall morphology demonstrates that the species most resembles D. pubipetala. Nevertheless, the species has several autapomorphies differentiating it from other Derris species, e.g., the presence of reddish midribs of the mature leaflets, sparsely hairy
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Hypericum liboense (Hypericaceae), a new species from Guizhou, China PhytoKeys (IF 1.4) Pub Date : 2024-01-12 Tian-Rou Wu, Jian Xu, Ming-Tai An, Jiang-Hong Yu, Feng Liu, Zheng-Ren Chen
Hypericum liboense M.T.An & T.R.Wu, sp. nov. (Hypericaceae) is a newly described species found in the Maolan National Nature Reserve of Guizhou Province, where it grows in rocky habitats without soil on karst mountain tops. In this study, key morphological characters were compared between the new species and the other known Hypericum species of Hypericaceae. DNA sequences were extracted from the
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A new species of genus Crenotia (Bacillariophyta) from Tibet, China PhytoKeys (IF 1.4) Pub Date : 2024-01-11 Xinyuan Na, Jiaming Liu, Ying Zhang, John Patrick Kociolek, Maxim Kulikovskiy, Xinxin Lu, Fengyang Sui, Huan Zhu, Guoxiang Liu, Yawen Fan, Yan Liu
During the investigation of the freshwater diatoms from Tibet, a monoraphid species was observed from a hot spring near Anduo County, located on a plateau in the central portion of Tibet. This species shares the diagnostic features of Crenotia, such as the valve bent along the transapical axis, striae uniseriate to biseriate from centre to the apices and areolae with special structures located at
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Description of five new Luticola D.G.Mann (Bacillariophyta, Diadesmidaceae) species from Indonesia with comments on the morphological boundaries of the genus PhytoKeys (IF 1.4) Pub Date : 2024-01-05 Mateusz Rybak, Łukasz Peszek, Oktiyas Muzaky Luthfi, Sulastri Arsad, John Patrick Kociolek, Andrzej Witkowski
During a survey of the Indonesian diatoms, five Luticola D.G.Mann taxa that could not be identified, based on the available literature were discovered. Based on light microscopy, scanning electron microscope observations and comparisons with similar taxa, all of them are described as new species. All taxa were found on mosses growing on tree trunks and concrete on the islands of Banda Besar and Seram
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The History and introduction of the Daurian Lily Lilium pensylvanicum and the new combination L. pensylvanicum var. alpinum (Liliaceae) PhytoKeys (IF 1.4) Pub Date : 2023-12-22 James A. Compton, Andrej K. Sytin
Manuscripts in the Archives of the Academy of Sciences in St. Petersburg reveal the first recorded observations and introductions of Lilium pensylvanicum Ker-Gawl. from Siberia to European Russia. The naming of Lilium pensylvanicum and its attempted renaming to L. dauricum Ker-Gawl. is fully outlined. Lectotypes are designated here for the names Lilium pseudodahuricum M.Fedoss. & S.Fedoss., L. dauricum
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Distribution and morphology of the diatom genus Olifantiella Riaux-Gobin & Compère in Indonesian and Australian waters, including the description of O. gondwanensis sp. nov. PhytoKeys (IF 1.4) Pub Date : 2023-12-21 Mateusz Rybak, Sulastri Arsad, Catherine Riaux-Gobin, Oktiyas Muzaky Luthfi, Gustaaf Hallegraeff, Renata Ciaś, Agnieszka Kierzek, Andrzej Witkowski
Samples from coastal tropical waters of Central Sulawesi, Bangka Island and Bawean Island in Indonesia and from the Great Barrier Reef at Fitzroy Island in Queensland, Australia were analysed for species composition of diatom assemblages with a focus on Olifantiella. Whereas samples from Fitzroy Island littoral in Australia retrieved only one species of Olifantiella, in Poso Bay, Indonesia, we observed
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Vaccinium usneoides (Ericaceae), a new species from Yunnan, China PhytoKeys (IF 1.4) Pub Date : 2023-12-21 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
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
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Lectotypification of two names of Carex buekii hybrids (Cyperaceae) and notes on their morphology, ecology and distribution PhytoKeys (IF 1.4) Pub Date : 2023-12-21 Helena Więcław, Radomír Řepka, Jacob Koopman
Lectotypes are designated for two Carex buekii hybrid names. The typification is supplemented with notes on their morphology, ecology, and distribution.
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Erica L. (Ericaceae): homonyms amongst published names for African species and proposed replacement names PhytoKeys (IF 1.4) Pub Date : 2023-12-20 E. Charles Nelson, E. G. H. Oliver, Michael D. Pirie
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
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The first epiphytic species of Valeriana in the world: Valeriana rudychazaroi (Caprifoliaceae) PhytoKeys (IF 1.4) Pub Date : 2023-12-18 Antonio Francisco-Gutiérrez, Miguel Cházaro-Basáñez, Rodrigo Carral-Domínguez
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
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Primula lizipingensis (Primulaceae), a new species from Sichuan, China PhytoKeys (IF 1.4) Pub Date : 2023-12-14 Wen-Bin Ju, Liu-Yang He, Qi Lan, Ying-Hao Wu, Heng-Ning Deng, Xing-Jin He, Xin-Fen Gao, Bo Xu
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
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Molecular and morphological evidence for a new species of Stachys (Lamiaceae) from Hunan, China PhytoKeys (IF 1.4) Pub Date : 2023-12-13 Ling Xue, Jia-Hua Cai, Min Zhan, Xiao-Ping Li, Lei Wu, Ya-Ping Chen
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
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Vaccinium chaozhouense (Ericaceae), a new species from East Guangdong, China PhytoKeys (IF 1.4) Pub Date : 2023-12-08 Yi-Hua Tong, Pei-Zhao Ye, Jian-Hong Ding, Wei-Chao Huang, Wei Huang, Jing-Bo Ni
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
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A new species of Casearia Jacq. (Salicaceae) from Central Panama and insights into its phylogenetic position within the genus PhytoKeys (IF 1.4) Pub Date : 2023-12-06 Astrid de Mestier, Ernesto Campos Pineda, Marco Cedeño Fonseca, Orlando O. Ortiz
We describe here a new species of Casearia from Panama based on both morphological and molecular data. Casearia isthmicasp. nov. is restricted to the mid-elevation cloud forests of Central Panama and presents morphological similarities with two more widespread species, C. sanchezii from high elevation areas of El Salvador and Mexico and C. tremula from the Caribbean, Central America, and Northern
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An integrative approach to species delimitation sinks three Chinese limestone karst Elatostema (Urticaceae) species PhytoKeys (IF 1.4) Pub Date : 2023-12-06 Zi-Bing Xin, Alexandre K. Monro, Ren-Fen Wang, Long-Fei Fu
Elatostema is recognized as a taxonomically difficult group due to the reduced nature of the tiny flowers and inflorescences, also the large number of species (ca 650 to 700). Different opinions on morphological species delimitation have resulted in instability, which is problematic in such a speciose group. In this paper, the taxonomic status of three putative species, E. robustipes, E. scaposum
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Rhynchospora mesoatlantica (Cyperaceae), an imperiled new species of beaksedge from eastern U.S.A. PhytoKeys (IF 1.4) Pub Date : 2023-12-01 Amanda Treher Eberly, Robert F. C. Naczi
Rhynchospora mesoatlanticasp. nov. (Cyperaceae) is described, illustrated, and compared with morphologically similar species. Rhynchospora mesoatlantica is known only from southern Delaware, southeastern Maryland, and southern New Jersey, all within the Mid-Atlantic region of the U.S.A. It inhabits sunny, wet margins of natural, shallow, nutrient-poor, seasonal ponds of the Coastal Plain. Narrow
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Eugenia sarahchazaroi (Myrtaceae, Myrteae), a new species from the cloud forest of Mexico PhytoKeys (IF 1.4) Pub Date : 2023-11-29 Antonio Francisco-Gutiérrez, Miguel Cházaro-Basáñez, Rodrigo Carral-Domínguez, Héctor Narave-Flores, Luis Islas-Tello
Following the description of Eugenia naraveana in 2016 from the cloud forest of the Cofre de Perote volcano, Mexico, the doubt about the existence of another unlocalized and sympatric species of Eugenia remained. After years of searching, the second endemic species of the Cofre de Perote volcano, Eugenia sarahchazaroi, is presented here. It belongs to the section Umbellatae, and is described, illustrated
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A new species of Cotoneaster (Rosaceae) from western Sichuan, China PhytoKeys (IF 1.4) Pub Date : 2023-11-27 Mingwan Li, Dan Li, Mengfei Lu, Shuangfeng Mo, Shen Ding, Yuanyuan Chen, Yong Lai, Dangquan Zhang, Wenbo Liao, Qiang Fan
Cotoneaster densiflorus, a new species of Rosaceae from western Sichuan, China, is described and illustrated. Morphologically, we inferred that the new species belongs to Cotoneaster Ser. Salicifolii sensu Yü et al. (1974) in the Flora of China and Fryer and Hylmö (2009). This species is most similar to C. salicifolius, but differs in its leaf blade of ovate-lanceolate to obovate shape (vs. elliptic-oblong
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Melanoseris kangdingensis (Lactucinae, Cichorieae, Asteraceae), a new species reported from western Sichuan, China PhytoKeys (IF 1.4) Pub Date : 2023-11-24 Qian-Qian Zhong, Ze-Huan Wang, Jia-Ju Xu, Qin-Wen Sun
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
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Gelidocalamus albozonatus (Poaceae, Bambusoideae), a new species from the southeast of Chongqing, China, and analysis of the morphological diversity in the core group of Gelidocalamus PhytoKeys (IF 1.4) Pub Date : 2023-11-24 Yong-Long Li, Rong Guo, Hong-Jing Zhang, Si-Rong Yi, Guang-Yao Yang, Wen-Gen Zhang
Gelidocalamus albozonatus W. G. Zhang, S. R. Yi & Y. L. Li, a new species of Gelidocalamus, collected from Pengshui County of Chongqing City in China, was described and illustrated herein. In this study, key morphological characters were compared between the new species and other eight “gelido-” members of Gelidocalamus. By using scanning electron microscopy (SEM), its leaf epidermal characters were
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New taxa of Plagiothecium (Plagiotheciaceae) from Pakistan PhytoKeys (IF 1.4) Pub Date : 2023-11-23 Grzegorz J. Wolski, Aamir Shehzad Khan, Beata Paszko
A revision of specimens of Plagiothecium deposited in the herbarium of Pakistan Museum of Natural History (PMNH) collected during a Japanese lead project on Cryptogams in the Western Himalaya (Pakistan) shows that the material consists of five taxa. Of the studied samples, the most common taxa were from the P. denticulatum complex, including Plagiothecium denticulatum var. obtusifolium, new to Pakistan
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A taxonomic revision of Thai Fernandoa Welw. ex Seem. (Bignoniaceae) PhytoKeys (IF 1.4) Pub Date : 2023-11-22 Chatchai Ngernsaengsaruay, Nattanon Meeprom, Weereesa Boonthasak, Yanatshara Attasook, Raweewan Thunthawanich
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
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Curcuma maxwellii and C. rubroaurantiaca (Zingiberaceae, Zingiberoideae), two new species from Thailand PhytoKeys (IF 1.4) Pub Date : 2023-11-20 Jana Leong-Škorničková, Sutthinut Soonthornkalump, Anders Jan Lindström, Sira Niwesrat, Sarah Qing Lim, Piyakaset Suksathan
Curcuma maxwelliisp. nov. and Curcuma rubroaurantiacasp. nov. (Zingiberaceae, Zingiberoideae, Zingibereae), two new red-orange-flowered species from Thailand, are described. They are compared to the morphologically closest species from the Curcuma subgen. Ecomatae and detailed descriptions, colour plates and information on their distribution, ecology, phenology and uses are provided. Preliminary
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Five new and noteworthy species of Epidendroideae (Orchidaceae) from southwestern China based on morphological and phylogenetic evidence PhytoKeys (IF 1.4) Pub Date : 2023-11-20 Ji-Dong Ya, Wan-Ting Wang, Yun-Long Liu, Hong Jiang, Zhou-Dong Han, Ting Zhang, Hua Huang, Jie Cai, De-Zhu Li
Five new orchid species from southwestern China’s Yunnan Province and the Tibetan Autonomous Region, Neottia lihengiae, Neottia chawalongensis, Papilionanthe motuoensis, Gastrochilus lihengiae, and Gastrochilus bernhardtianus, are described and illustrated. To confirm their identities, and to resolve phylogenetic relationships, we sequenced the complete plastomes of these taxa with their congeneric
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Synotis jinpingensis (Asteraceae, Senecioneae), a new species with white ray florets from southeastern Yunnan, China PhytoKeys (IF 1.4) Pub Date : 2023-11-20 Liao-Chen Zhao, Ren Chen, Zhi-Yong Yu, Ming Tang, Qin-Er Yang
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
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Lysimachia cavicola (Primulaceae), a new species from Guangxi, China PhytoKeys (IF 1.4) Pub Date : 2023-11-17 You Nong, Yuan Fang, Chuan-Gui Xu, Gui-Yuan Wei, Ke-Jian Yan, Ren-Chuan Hu, Yuan-Guang Wen
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
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Molecular phylogeny and taxonomy of Hosta (Asparagaceae) on Shikoku Island, Japan, including five new species, one new subspecies, and two new status assignments PhytoKeys (IF 1.4) Pub Date : 2023-11-17 Tetsukazu Yahara, Shun K. Hirota, Seiko Fujii, Yasushi Kokami, Kengo Fuse, Hiroyuki Sato, Shuichiro Tagane, Yoshihisa Suyama
Japan has 16 native species of the genus Hosta Tratt. (Asparagaceae). A recent study on Hosta based on field surveys and molecular phylogenetic analyses resulted in the discovery of six unknown taxa in Kochi Prefecture, Shikoku Island, southwestern Japan. We aimed to identify these unknown taxa. Therefore, we constructed a finely resolved phylogeny for 320 Hosta samples collected from the Honshu
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First record of the genus Camptotheca (Nyssaceae) in Vietnam and the lectotypification of C. acuminata PhytoKeys (IF 1.4) Pub Date : 2023-11-15 Zhen-Hua Zhu, Ngoc Bon Trinh, Thanh Son Hoang, Bo Li
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
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Taxonomic revision of the Erigeron acris group (Asteraceae) in Murmansk Region, Russia, reveals a complex pattern of native and alien taxa PhytoKeys (IF 1.4) Pub Date : 2023-11-15 Alexander N. Sennikov, Mikhail N. Kozhin
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
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Neottia maolanensis, a replacement name for Neottia bifida M.N.Wang (Orchidaceae) PhytoKeys (IF 1.4) Pub Date : 2023-11-14 Mei-Na Wang, Xin-Yi Wu, Cheng-Jiang Tan, Ping Yu, Wen-Hui Rao, Jie-Shan Chen, Jian Li, Jian-Bing Chen
According to Articles 53.1 of the International Code of Nomenclature for Algae, Fungi, and Plants (Shenzhen Code), Neottia bifida M.N.Wang (as 'bifidus'; PhytoKeys 229: 222, 2023) is an illegitimate name, and hence a new name Neottia maolanensis M. N. Wang is proposed here.
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Mazus motuoensis (Mazaceae), a new species from Xizang, China PhytoKeys (IF 1.4) Pub Date : 2023-11-14 Wen-Bin Ju, Xiong Li, Heng-Ning Deng, Meng Li, Xing-Jin He, Xin-Fen Gao, Bo Xu
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
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Pollen morphology of Clerodendrum L. (Lamiaceae) from China and its systematic implications PhytoKeys (IF 1.4) Pub Date : 2023-11-10 Xiakai Huang, Rui Wu, Zheng Xiong, Zhonghui Ma
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
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Gesneria tuberifera (Gesneriaceae), a new lithophytic species from the Sierra de Bahoruco, Barahona Peninsula of southern Hispaniola (Dominican Republic) PhytoKeys (IF 1.4) Pub Date : 2023-11-10 John L. Clark, Teodoro Clase
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
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Bomarea pastazensis (Alstroemeriaceae), an exceptionally small new species from the eastern Andean slopes of Ecuador PhytoKeys (IF 1.4) Pub Date : 2023-11-10 John L. Clark, Alisson Fierro-Minda, Nolan Exe, Mia Johnson, Carrie M. Tribble, Lou Jost
Recent field research on the eastern slopes of the Andes resulted in the discovery of a new species of Bomarea from the Cerro Candelaria Reserve in the Tungurahua province of Ecuador. Bomarea pastazensis is the second smallest species in the genus and differs from the smallest by the presence of glutinous trichomes on the ovary, glabrous sepals, and greenish-yellow petals with purple spots. Based
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Paraboea zunyiensis (Gesneriaceae), a new species from north Guizhou, China PhytoKeys (IF 1.4) Pub Date : 2023-11-06 Tan Deng, Fang Wen, Da-Jun Xie, Ruo-Xun Wei, Lin He, Quan-Li Dou, Zheng-Min Qian, Ren-Bo Zhang
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
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Four new species of Perilimnastes (Sonerileae, Melastomataceae) from Vietnam PhytoKeys (IF 1.4) Pub Date : 2023-11-03 Jin-Hong Dai, Truong Van Do, Ying Liu
Perilimnastes is a genus currently treated in the polyphyletic Phyllagathis. Recent phylogenomic analyses have identified a morphologically cohesive lineage referred to as the Phyllagathis (raphides) clade, which should be excluded from Phyllagathis and treated as a distinct genus under the name Perilimnastes. Morphological and phylogenomic data have confirmed that four new species collected from
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Taxonomic revision of Camellia langbianensis (Theaceae) with four new synonyms PhytoKeys (IF 1.4) Pub Date : 2023-10-26 Dongwei Zhao
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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Preliminary checklist of the genus Festuca L. (Loliinae, Pooideae, Poaceae) in the Altai Mountains with outlines for further studies PhytoKeys (IF 1.4) Pub Date : 2023-10-26 Polina D. Gudkova, Elizaveta A. Kriuchkova, Alexander I. Shmakov, Marcin Nobis
Here we present an updated checklist of the genus Festuca in the Altai Mountains (AM). The study was carried out on the abundant herbarium material and considered the latest published phylogenetic analyses. Festuca was revised within the scope of the fine-leaved group (clade) with two sections, sect. Aulaxyper and sect. Festuca. Two species, namely F. richardsonii and F. lenensis, were previously
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Walsura guangxiensis (Meliaceae), a new species from Guangxi, China PhytoKeys (IF 1.4) Pub Date : 2023-10-26 You Nong, Chuan-Gui Xu, Gui-Yuan Wei, Ke-Jian Yan, Xin-Cheng Qu, Zhan-Jiang Zhang, Ren-Chuan Hu, Yun-Feng Huang
Walsura guangxiensis (Meliaceae), a new species from Guangxi, China, is here described and illustrated. The new species is easily distinguishable from the other two Chinese members of the genus by its petals being pale yellow, filaments being connate into tubes above the middle, the berry being oval and glabrous. An identification key of Walsura for 17 species is also provided.
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Anoectochilus zhongshanensis (Orchidaceae), a new species from Guangxi, China PhytoKeys (IF 1.4) Pub Date : 2023-10-25 Yan-Bin Wu, Yu Han, Xu-Hui He, Hui-Ling Chen, Jin-Zhong Wu, Qi Ye, Cheng-Jian Zheng
A new species of Anoectochilus (Orchidaceae) from Guangxi, China, A. zhongshanensis, is described here, which was identified based on phylogenetic studies adopting combined plastid markers (rbcL-matK-trnL-F), morphological observation and chemical analysis. Molecular phylogenetic results support the systematic status of A. zhongshanensis as a new species in Anoectochilus genus. Morphologically, this
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A new species of Mollinedia (Monimiaceae, Laurales) from the Quadrilátero Ferrífero, Brazil PhytoKeys (IF 1.4) Pub Date : 2023-10-23 Danilo Alvarenga Zavatin, Renato Ramos, Mauricio Takashi Coutinho Watanabe, Luciano Gonçalves Pedrosa, Elton John de Lírio
Monimiaceae comprises approximately 26 genera and 250 species, with a pantropical distribution, predominantly occurring in humid forests. In Brazil, it is represented by five genera and 47 species, most of which are found in the Atlantic Forest, particularly in dense ombrophilous forest. Nevertheless, studies on this family in other biomes and vegetation types in Brazil are still scarce. The Quadrilátero
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Ardisia krauensis, a new species of Primulaceae (Myrsinoideae) from Peninsular Malaysia PhytoKeys (IF 1.4) Pub Date : 2023-10-23 Avelinah Julius, Suhaimi Syahida-Emiza, Timothy M. A. Utteridge
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
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Lithocarpus tapanuliensis (Fagaceae), a new stone oak from northern Sumatra and its role as an important resource for critically endangered orangutans PhytoKeys (IF 1.4) Pub Date : 2023-10-20 Try Surya Harapan, Wei Harn Tan, Thoriq Alfath Febriamansyah, Nurainas, Syamsuardi, Joeri Sergej Strijk
A new species of stone oak, Lithocarpus tapanuliensis Harapan, W.H.Tan, Nurainas & Strijk from South Tapanuli, North Sumatra, Indonesia is described. We provide colour photographs, a distribution map and a new IUCN conservation status assessment for inclusion on the global Red List. The unique cupule morphology, particularly the shape, placement and distinctness of the cupule protuberances, are distinctive
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Karyotype and genome size variation in Delphinium subg. Anthriscifolium (Ranunculaceae) PhytoKeys (IF 1.4) Pub Date : 2023-10-18 Xiao-Yu Luo, Tang-Jie Nie, Heng Liu, Xue-Fei Ding, Ying Huang, Chun-Ce Guo, Wen-Gen Zhang
Five taxa of Delphinium subg. Anthriscifolium have been karyologically studied through chromosome counting, chromosomal measurement, and karyotype symmetry. Each taxon that we investigated has a basic chromosome number of x = 8, D. anthriscifolium var. savatieri, D. anthriscifolium var. majus, D. ecalcaratum, and D. callichromum were diploid with 2n = 16, while D. anthriscifolium var. anthriscifolium
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Primula xilingensis (Primulaceae), a new species from Sichuan, China PhytoKeys (IF 1.4) Pub Date : 2023-10-18 Junjia Luo, Mingke Zhang, Xiaofeng Liu, Hui Chen, Tingyu Li, Xudong Ma, Ke Huang, Zhixi Fu
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
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Lagerstroemia stenophylla (Lythraceae), a new species from China PhytoKeys (IF 1.4) Pub Date : 2023-10-13 Bao-Huan Wu, Xing Hu, Wen-Hui Tu, Wei Wang, Se-Ping Dai
Lagerstroemia stenophylla, a new species from southeastern Shaanxi Province and northwestern Hubei Province of China is described. Morphologically, L. stenophylla resembles L. subcostata, but it differs in having 4-angular, subalate branchlets, elliptic-lanceolate, or narrowly elliptic leaves, and relatively larger flowers.
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Digitization of the historical Herbarium of Michele Guadagno at Pisa (PI-GUAD) PhytoKeys (IF 1.4) Pub Date : 2023-10-12 Francesco Roma-Marzio, Simonetta Maccioni, David Dolci, Giovanni Astuti, Nicoletta Magrini, Federica Pierotti, Roberta Vangelisti, Lucia Amadei, Lorenzo Peruzzi
The herbarium digitization process is an essential first step in transforming the vast amount of data associated with a physical specimen into flexible digital data formats. In this framework, the Herbarium of the University of Pisa (international code PI), at the end of 2018 started a process of digitization focusing on one of its most relevant collections: the Herbarium of Michele Guadagno (1878–1930)
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Generic concepts and species diversity within the Gynoxyoid clade (Senecioneae, Compositae) PhytoKeys (IF 1.4) Pub Date : 2023-10-10 Belen Escobari, Thomas Borsch, Norbert Kilian
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
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Panax siamensis J. Wen, a new species of the ginseng genus (Panax, Araliaceae) from northern Thailand PhytoKeys (IF 1.4) Pub Date : 2023-10-06 Jun Wen, Gary Krupnick, Hans-Joachim Esser
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
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Bryophyte flora of Mount Tebu Forest Reserve, Terengganu, Peninsular Malaysia PhytoKeys (IF 1.4) Pub Date : 2023-10-04 Nur Saidatul Atiqah, Elizabeth Pesiu, Muhammad Syafiq Sarimi, Nor Aishah Shafie, Chin Wen Koid, Nik Norhazrina, Nur Syazwana, Gaik Ee Lee
A checklist of the bryophyte flora of Mount Tebu Forest Reserve in Terengganu, Peninsular Malaysia, is presented. A total of 189 taxa in 71 genera and 26 families were enumerated. This figure represents 63% of the 298 bryophyte species recorded so far for the State of Terengganu. Out of 189 taxa of bryophytes, 26 liverworts are new additions to the bryoflora of Terengganu. The most prominent liverwort
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A taxonomic revision of Cenchrus L. (Poaceae) in Thailand, with lectotypification of Pennisetum macrostachyum Benth. PhytoKeys (IF 1.4) Pub Date : 2023-09-28 Paweena Wessapak, Chatchai Ngernsaengsaruay, Suthee Duangjai
A revision of the genus Cenchrus (Poaceae) in Thailand is reported. Seven species, i.e. C. brownii, C. ciliaris, C. clandestinus, C. echinatus, C. pedicellatus, C. purpureus and C. setosus are described in this taxonomic treatment. This genus is an exotic species and distributed throughout the floristic regions. All the species have become naturalised to Thailand as a weed and found growing in wastelands
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Phylogenomic inference of the African tribe Monodoreae (Annonaceae) and taxonomic revision of Dennettia, Uvariodendron and Uvariopsis PhytoKeys (IF 1.4) Pub Date : 2023-09-22 Léo-Paul M. J. Dagallier, Frank M. Mbago, Marie Couderc, Myriam Gaudeul, Aurélie Grall, Caroline Loup, Jan J. Wieringa, Bonaventure Sonké, Thomas L. P. Couvreur
Monodoreae (Annonaceae) is a tribe composed of 11 genera and 90 species restricted to the tropical African rain forests. All the genera are taxonomically well circumscribed except the species rich genera Uvariodendron and Uvariopsis which lack a recent taxonomic revision. Here, we used a robust phylogenomic approach, including all the 90 currently accepted species, with several specimens per species