PhytoKeys最新文献

{"title":"<i>Primula maershanensis</i> (Primulaceae), a new species in <i>Primula</i> sect. <i>Auganthus</i> from Sichuan, China.","authors":"Ming-Yun Sheng, Yuan-Mi Wu, Jiu-Lin Gu, Hong-Qiang Lin, Wei Zhou, Lei Zheng, Zhi-Kun Wu","doi":"10.3897/phytokeys.274.191386","DOIUrl":"https://doi.org/10.3897/phytokeys.274.191386","url":null,"abstract":"<p><p><i>Primula maershanensis</i> J.L.Gu & Z.K.Wu, a new species of Primulaceae from Sichuan, China, is described and illustrated. Morphological evidence supports the placement of <i>P. maershanensis</i> within <i>Primula</i> sect. <i>Auganthus</i>, a section characterized by leaves that are shallowly to deeply lobed and covered with hairs and by a distinctively broad calyx with a flattened base. The new species is distinguished from other species in this section by its short rhizome and nearly fleshy roots; subpurple petioles and scapes; leaf blade suborbicular, wider than long, margin palmately 5-9-lobed to the middle of the blade; and a bright yellow corolla associated with long-homostylous flowers. Information on the distribution, morphological comparisons with closely related species, and the conservation status of the new species is also provided, along with a key to the known species of <i>Primula</i> sect. <i>Auganthus</i>.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"274 ","pages":"61-71"},"PeriodicalIF":1.5,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13146781/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147840347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two new species of <i>Rhipidoglossum</i> (Orchidaceae, Angraecinae) from Central Africa, probably pollinated by settling moths.","authors":"Arthur Macedo, Vincent Droissart, Štěpán Janeček, Yannick Klomberg, Marcelo Trovó, Tariq Stévart, João Farminhão","doi":"10.3897/phytokeys.274.184429","DOIUrl":"https://doi.org/10.3897/phytokeys.274.184429","url":null,"abstract":"<p><p>A revision of Central African specimens of <i>Rhipidoglossum</i> has revealed two new species from the Cameroon Volcanic Line (CVL) and the lowland and peripheric forests of the Guineo-Congolian rainforest block. <i>Rhipidoglossum acuminifolium</i> <b>sp. nov</b>. is endemic to the CVL and is morphologically related to <i>R. delepierreanum</i> from the Western Rift Mountains. This disjunction may suggest historical connectivity or long-distance dispersal between these montane systems. Footage from Mount Cameroon recorded the settling moth <i>Afroracotis cf. squalida</i> (Lepidoptera, Erebidae) as a potential pollinator of <i>R. acuminifolium</i>, as well as numerous other plant-animal interactions, including only the second documented orchid-orthopteran interaction, involving nectaring by raspy crickets (Orthoptera, Gryllacrididae). <i>Rhipidoglossum acuminifolium</i> is preliminarily assessed here as Endangered (EN) under the IUCN Red List criteria. The morphologically allied <i>R. delepierreanum</i> is here newly recorded for Burundi, the Democratic Republic of the Congo (DRC), and Uganda. In turn, <i>Rhipidoglossum falcatulum</i> <b>sp. nov</b>. is described from the Central African Republic and the DRC, where it occurs in the Congolian and Central Zambezian regions, in Guineo-Congolian lowland forests and <i>muhulu</i> vegetation. It is preliminarily assessed as Endangered (EN), and it is also hypothesised to be phalaenophilous. These two novelties increase the species diversity of <i>Rhipidoglossum</i> up to 56 species in Tropical Africa and the Gulf of Guinea Islands.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"274 ","pages":"1-30"},"PeriodicalIF":1.5,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13135204/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Mazus unguiculatus</i> (Mazaceae), a distinct new species from Anhui Province, eastern China.","authors":"Si-Cheng Xu, Dao-Zhang Min, Bo Li","doi":"10.3897/phytokeys.274.183749","DOIUrl":"https://doi.org/10.3897/phytokeys.274.183749","url":null,"abstract":"<p><p><i>Mazus unguiculatus</i> Bo Li, a new species of Mazaceae from Anhui Province in eastern China, is described and illustrated. Phylogenetic analyses based on combined chloroplast DNA regions (<i>matK</i>, <i>rbc</i>L, <i>rps</i>16, and <i>trn</i>L-F) and the nuclear ribosomal internal transcribed spacer (nrITS), together with morphological evidence, confirm that the new species is sister to <i>M. spicatus</i> Vaniot. It is distinguished from the latter and all other congeners by its unique corolla morphology, viz., the upper lip is bilobed, each lobe has an emarginate to bilobed apex, whereas the lower lip is deeply trilobed with subequal lobes; each lobe possesses a short claw at the base and shallow teeth at the middle of the apex, and the palate is absent. A detailed description is provided, along with information on its distribution, habitat, and conservation status.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"274 ","pages":"49-59"},"PeriodicalIF":1.5,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13135202/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of genetic diversity and structure of the endangered medicinal plant genus <i>Huperzia</i> (Lycopodiaceae) in China based on EST-SSR markers.","authors":"Muzi Li, Dengpan Yin, Haibo Li, Yumo Yue, Haibin Zhou, Wei Yu, Rui Qin, Zhongnian Zhang, Jiahao Wen, Yeqin Xu, Chaokai Miao, Qinyuan Shen, Dekai Wang","doi":"10.3897/phytokeys.274.180449","DOIUrl":"https://doi.org/10.3897/phytokeys.274.180449","url":null,"abstract":"<p><p><i>Huperzia serrata</i> is an endangered perennial medicinal lycophyte, primarily distributed across most regions of China, eastern and southern Asia, Oceania, and the Americas. It produces Huperzine A (HupA), a potent natural acetylcholinesterase (AChE) inhibitor with significant therapeutic potential for treating Alzheimer's disease. To elucidate the genetic diversity and phylogenetic relationships of this species and facilitate its conservation, we performed full-length transcriptome sequencing of <i>H. serrata</i> using the PacBio Sequel II platform and developed expressed sequence tag-simple sequence repeat (EST-SSR) markers. Transcriptome analysis identified 16,511 SSR loci from the transcriptome, with an average density of one locus per 4.11 kb. These loci exhibited diverse repeat motifs (ranging from mono- to hexanucleotides), predominantly containing 5-20 repeats. Genotyping of 47 <i>Huperzia</i> accessions (representing 8 different species) using 21 polymorphic primers identified 98 alleles, yielding mean Nei's gene diversity (<i>H</i>) and Shannon's information index (<i>I</i>) values of 0.3171 and 0.4819, respectively, indicating a moderate level of genetic diversity. Principal coordinate analysis (PCoA) revealed no significant correlation between genetic and geographic distance. Cluster analysis based on genetic similarity coefficients (ranging from 0.41 to 0.82) delineated distinct genetic groupings. However, SSR cluster analysis was inconsistent with taxonomic identification based on morphology to a great extent. At a similarity coefficient of 0.51, the accessions were classified into four major groups. Notably, accessions from Guizhou (GZ) and Yunnan (YN) provinces tended to cluster together, with accessions GS_1_GL and GZ_6_GY exhibiting the highest genetic similarity. This study provides the first comprehensive set of genomic resources and insights into the genetic diversity of <i>Huperzia</i> across a wide range, revealing its fine-scale genetic structure. These findings establish a crucial scientific foundation for the conservation and sustainable utilization of this valuable medicinal species.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"274 ","pages":"31-48"},"PeriodicalIF":1.5,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13135199/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological and genomic data from Belgian naturalised populations reinstate the enigmatic <i>Lathyrus platyphyllos</i> (Fabaceae) as a distinct European species.","authors":"Filip Verloove, Sander de Backer, Yves Bawin, Quentin Groom, Frederik Leliaert, Sofie Meeus, Steven B Janssens","doi":"10.3897/phytokeys.273.180869","DOIUrl":"https://doi.org/10.3897/phytokeys.273.180869","url":null,"abstract":"<p><p>The genus <i>Lathyrus</i> L. (Fabaceae) is represented in Belgium by several native and alien species, amongst which the <i>Lathyrus sylvestris</i>-latifolius complex has long posed taxonomic difficulties. Since the 1940s, plants with intermediate morphological characters between <i>L. sylvestris</i> and <i>L. latifolius</i> have been observed in Belgium, combining the smaller corollas of the former with the broader, rounded leaflets of the latter. To clarify their identity, we conducted phylogenetic analyses of four chloroplast markers (<i>trnS-G</i>, <i>trnL-F</i>, <i>rbcL</i>, <i>trnH-psbA</i>) and the nuclear rDNA internal transcribed spacer (ITS), complemented by genome-wide SNP data obtained through DArTseq genotyping for 20 individuals representing <i>L. latifolius</i>, <i>L. heterophyllus</i>, <i>L. sylvestris</i> and the enigmatic Belgian specimens. Phylogenetic analyses, based on the five markers, together with analysis of the SNP data (Principal Coordinates Analysis, Maximum Likelihood phylogenetic reconstruction and multispecies coalescent species delimitation), all revealed four well-supported genetic lineages corresponding to these taxa. The enigmatic specimens form a monophyletic clade sister to <i>L. sylvestris</i>, genetically distinct from both <i>L. heterophyllus</i> (including var. <i>unijugus</i>) and <i>L. latifolius</i>. These results exclude hybrid origin and support recognition of these plants as an independent evolutionary lineage, which can, thus, be regarded as a distinct species. In light of both morphological and molecular evidence, we reinstate the name <i>Lathyrus platyphyllos</i> (Retz.) W.D.J.Koch for this taxon. <i>Lathyrus platyphyllos</i> differs from <i>L. sylvestris</i> by its broader leaflets with rounded apices and its wider stipules and stem wings. The species is non-native in Belgium, first recorded in 1943 and now locally naturalised along railway lines and other disturbed sites. Recognition of <i>L. platyphyllos</i> restores taxonomic clarity within the <i>L. sylvestris</i>-latifolius complex and highlights the need for further study of its native range, introduction pathways and potential invasiveness.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"273 ","pages":"255-279"},"PeriodicalIF":1.5,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13133675/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Dracula aguilarii</i> (Orchidaceae, Pleurothallidinae), a new species from southwestern Ecuador and the first confirmed location for <i>Dracula soennemarkii</i>.","authors":"Luis E Baquero R, Marco M Jiménez, Gabriel A Iturralde","doi":"10.3897/phytokeys.273.182821","DOIUrl":"https://doi.org/10.3897/phytokeys.273.182821","url":null,"abstract":"<p><p>The genus <i>Dracula</i> comprises more than 130 species of epiphytic orchids, with its highest diversity in the northern Andes of Colombia and Ecuador. Here, we describe <i>Dracula aguilarii</i> <b>sp. nov</b>. from El Oro Province in southwestern Ecuador. The novelty resembles <i>D. hirtzii</i> in its large, cream-colored flowers suffused with brown, and shortly pubescent sepals, but differs in having narrowly obovate, obtuse leaves, a deep, broad, rounded sepaline cup, and shorter sepaline tails. We also report the first confirmed locality for <i>D. soennemarkii</i>, previously described without collection data. Preliminary conservation assessments based on IUCN Red List criteria indicate that <i>D. aguilarii</i> is Endangered (EN) and <i>D. soennemarkii</i> is Critically Endangered (CR) due to their extremely restricted distributions and ongoing habitat loss.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"273 ","pages":"281-297"},"PeriodicalIF":1.5,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13133676/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Systematics of <i>Parnassia</i> (Celastraceae) inferred from plastid and nuclear DNA sequence data.","authors":"Wen-Xuan Zhang, Hong-Tao Li, Jin-Mei Lu, Ding Wu, De-Zhu Li","doi":"10.3897/phytokeys.273.182792","DOIUrl":"https://doi.org/10.3897/phytokeys.273.182792","url":null,"abstract":"<p><p>We presented a comprehensive phylogenetic analysis of <i>Parnassia</i> covering approximately 80% of recognized species. By integrating five plastid markers (<i>rbcL</i>, <i>matK</i>, <i>rpl32</i>-<i>trnL</i>, <i>trnT</i>-<i>trnL</i> and <i>trnL</i>-<i>trnF</i>) with nuclear marker ITS sequences and applying both maximum parsimony and Bayesian inference approaches, we reconstructed robust phylogenetic relationships within the genus. We presented notable differences between molecular phylogeny and the established sectional classification. While <i>Parnassia</i> sect. <i>Fimbripetalum</i> emerged as monophyletic with strong support, <i>P.</i> sect. <i>Saxifragastrum</i>, <i>P.</i> sect. <i>Cladoparnassis</i>, <i>P.</i> sect. <i>Nectaroquinquelobos</i>, and <i>P.</i> sect. <i>Allolobos</i> were resolved as paraphyletic. The monotypic <i>P.</i> sect. <i>Nectarobilobos</i> represented a distinct evolutionary lineage, whereas the species-rich <i>P.</i> sect. <i>Nectarotrilobos</i> was dispersed across multiple clades. Notably, three eastern Himalayan species (<i>P. faberi</i>, <i>P. esquirolii</i> and <i>P. labiata</i>) formed a well-defined clade with highly reduced staminodia. This study provided a critical molecular framework for reevaluating morphological evolution and revising the infrageneric classification of <i>Parnassia</i>.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"273 ","pages":"237-253"},"PeriodicalIF":1.5,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13133674/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Rhododendron luohanbaense</i> (Ericaceae), a new species from northeast Yunnan, China.","authors":"Yong-Li Zhao, Chao-Shan Gu, Zheng-Hang Liao, Jing-Li Zhang, Wei Li, Zhu-Fang Xie, Fei Wang, Yong-Peng Ma, Xing-Xing Mao, De-Tuan Liu","doi":"10.3897/phytokeys.273.182747","DOIUrl":"https://doi.org/10.3897/phytokeys.273.182747","url":null,"abstract":"<p><p><i>Rhododendron luohanbaense</i>, a new species of Ericaceae, is described from Zhaotong City in northeastern Yunnan Province, China. Morphologically, it is most similar to both <i>R. pachytrichum</i> and <i>R. maculiferum</i> and can be classified into the subgen. <i>Hymenanthes</i> sect. <i>Pontica</i> subsect. <i>Maculifera</i>. However, it can be easily distinguished by markedly smaller and narrower leaves with acuminate apex, abaxial midribs densely covered with woolly indumentum, yellowish-green corollas speckled with green or purple dots, inflorescences bearing up to 7 flowers, flowers with ovary densely pilose, capsule densely brown setose. Phylogenomic evidence, based on a coalescent-based species tree reconstructed from 5358 single-copy nuclear orthologous genes, also supports recognition of the new taxon.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"273 ","pages":"299-308"},"PeriodicalIF":1.5,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13133673/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Hemipilia huanglongensis</i> (Orchidaceae), a new species from north Sichuan, China.","authors":"Da-Jun Xie, Jin-Xiao Li, Tan Deng, Ruo-Xun Wei, Quan-Li Dou, Shu-Ming Peng, Ren-Bo Zhang","doi":"10.3897/phytokeys.273.181545","DOIUrl":"https://doi.org/10.3897/phytokeys.273.181545","url":null,"abstract":"<p><p>A new species of Orchidaceae, <i>Hemipilia huanglongensis</i> D.J.Xie & R.B.Zhang, was discovered on steep karst slopes in northern Sichuan, China and is described and illustrated, based on morphological and molecular phylogenetic evidence. While morphologically similar to <i>H. amplexifolia</i> (Tang & F.T.Wang) Y.Tang and H.Peng, <i>H. faberi</i> (Rolfe) Y.Tang and H.Peng and <i>H. tetraloba</i> (Finet) Y.Tang and H.Peng, it can be distinguished by a squamose lip base with an upwardly protruding lamella, along with larger floral structures, including the sepals, petals, lip and ovary. Phylogenetic analyses, based on nuclear (ITS) and plastid (<i>mat</i>K, <i>rbc</i>L) DNA sequences, further support its distinction from these three morphologically allied species.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"273 ","pages":"225-236"},"PeriodicalIF":1.5,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129549/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A revision of the <i>Miliusa</i> (Annonaceae) from China.","authors":"Zhiyuan Shi, Xueliang Hou","doi":"10.3897/phytokeys.273.174592","DOIUrl":"https://doi.org/10.3897/phytokeys.273.174592","url":null,"abstract":"<p><p>Based on extensive fieldwork, herbarium and literature studies, and molecular phylogenetic analyses, we present a comprehensive taxonomic revision of the genus <i>Miliusa</i> in China. Ten species are recognized, with the following major taxonomic changes: <i>Miliusa tenuistipitata</i> is reduced to synonymy with <i>M. dioeca</i>; two new species, <i>M. aurilaveoides</i> X.L.Hou & Z.Y.Shi, <b>sp. nov</b>. and <i>M. xiaoboi</i> X.L.Hou & Z.Y.Shi, <b>sp. nov</b>., are described; <i>M. sinensis</i> is reinstated as distinct from <i>M. balansae</i>; and the treatment of <i>M. cuneata</i> and <i>M. velutina</i> in the \"Flora of China\" is revised. An identification key and photographs of living plants are provided.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"273 ","pages":"185-223"},"PeriodicalIF":1.5,"publicationDate":"2026-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13126048/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}