PhytoKeys最新文献

{"title":"<i>Decussiphycussinensis</i> sp. nov. (Bacillariophyceae, Mastogloiales) - a new species described from China, with comments on phylogenetic position of the genus.","authors":"Andrei Mironov, Anton Glushchenko, Elena Kezlya, Yevhen Maltsev, Anton Iurmanov, Yan Liu, Maxim Kulikovskiy","doi":"10.3897/phytokeys.254.142654","DOIUrl":"10.3897/phytokeys.254.142654","url":null,"abstract":"<p><p>During the study of freshwater diatom communities in Hainan Province, China, we uncovered an unknown diatom species of the genus <i>Decussiphycus</i>, which is described as <i>Decussiphycussinensis</i> <b>sp. nov.</b> herein. The description is based on LM and SEM investigations; morphologically, the new species is compared to other taxa belonging to the genus. We complemented the description with the results of a molecular analysis based on SSU rDNA and <i>rbc</i>L sequencing. Molecular data is acquired for <i>Decussiphycus</i> for the first time. Hereby, we discuss the phylogenetic relationships between this genus and its closest allies - <i>Aneumastus</i> and <i>Mastogloia</i>, demonstrating the affinity of <i>Decussiphycus</i> within the order Mastogloiales.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"254 ","pages":"1-19"},"PeriodicalIF":1.3,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11937899/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143730893","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>Chelonopsisguchengensis</i>, a new species of Lamiaceae from Hubei Province in Central China.","authors":"Yuhan Xu, Zhengcai Wei, Qiang Fu, Chunlei Xiang, Zhengqun Deng, Houchao Liu, Yuxing Chen, Jun Wen, Xiuqun Liu","doi":"10.3897/phytokeys.253.145834","DOIUrl":"10.3897/phytokeys.253.145834","url":null,"abstract":"<p><p><i>Chelonopsis</i> is a small genus endemic to East Asia. In this study, a new species, <i>C.guchengensis</i>, from Nanhe National Nature Reserve, Gucheng County, Hubei Province is described and illustrated. Molecular phylogenetic analyses based on two nuclear ribosomal DNA regions (ETS and ITS) and five plastid DNA markers (<i>trnL</i> intron, <i>trnL</i>-<i>trnF</i>, <i>trnS</i>-<i>trnG</i>, <i>psbA</i>-<i>trnH</i>, and <i>rps16</i>) were carried out to explore the phylogenetic position of the new species. A close relationship between the new species and <i>C.giraldii</i> is supported by molecular phylogenetic and morphological evidence. However, the two species can be easily distinguished from each other by mostly leaf and inflorescence morphology.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"253 ","pages":"331-342"},"PeriodicalIF":1.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11933918/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143710878","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":"Broad-ranged, highly disjunct, locally rare and severely endangered: the challenging risk assessment and a global conservation strategy for <i>Ericasicula</i> Guss. <i>sensu lato</i> (Ericaceae).","authors":"Salvatore Pasta, Hicham El Zein, Ozan Şentürk, Salih Gücel, Leopoldo de Simone, Bertrand de Montmollin","doi":"10.3897/phytokeys.253.121945","DOIUrl":"10.3897/phytokeys.253.121945","url":null,"abstract":"<p><p>The distribution range of <i>Ericasicula</i> Guss. <i>sensu lato</i> spans the central and eastern Mediterranean Basin, but shows a significantly fragmented pattern, and its populations are locally subject to multiple threats inducing continuous regression. The species is distributed across five countries, Italy, Libya, Cyprus, Türkiye and Lebanon, and includes two subspecies, subsp. sicula and subsp. bocquetii, currently represented by 31 and 8 stands, respectively. This study provides an updated overview of the distribution, ecology, and conservation status of both subspecies. New distribution data and ecological information were gathered through fieldwork, literature, and herbarium specimens. In Sicily (Italy), unmanned aerial systems and high-resolution digital elevation models were employed to perform a detailed census of the last extant stand, mapping its distribution and calculating its 3D occupation surface. Based on our analyses, <i>Ericasicula</i> is evaluated as Least Concern (LC) at the global level, even though each subspecies and subpopulation are nationally endangered. In fact, 19 locations of E.siculasubsp.sicula were not confirmed recently, and this subspecies should be considered as Critically Endangered (CR) in Italy and Vulnerable (VU) in Lebanon, Cyprus and Türkiye. In Libya, E.siculasubsp.sicula is VU due to severe habitat degradation. E.siculasubsp.bocquetii, formerly known from a few locations in the mountains of SW Anatolia, Türkiye, has been found at lower altitudes in several new locations and is also assessed as VU. Further fieldwork is recommended to better assess the demographic trends of the different subpopulations. Genetic analyses are needed to clarify the taxonomic value of infraspecific taxa previously described and to guide future conservation efforts of the most unique and genetically rich stands, both in-situ and ex-situ. Improving the conservation strategies for taxa like <i>Ericasicula</i> <i>s. l.</i> requires the collaboration of specialists from all involved countries, making it crucial to maintain networks of experts in the Mediterranean.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"253 ","pages":"295-329"},"PeriodicalIF":1.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11933908/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143710879","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>Neotriniakurramica</i> (Poaceae, Stipeae), a new species from Parachinar (Khyber Pakhtunkhwa, Pakistan).","authors":"Amir Sultan, Amjad Khan, Raees Khan, Asif Mehmood, Murtaza Hussain, Marcin Nobis","doi":"10.3897/phytokeys.253.145562","DOIUrl":"10.3897/phytokeys.253.145562","url":null,"abstract":"<p><p>The family of grasses (Poaceae) is one of the most diverse plant families, with the tribe Stipeae representing an ecologically significant group of more than 600 species primarily distributed in arid and semi-arid regions. The genus <i>Neotrinia</i>, a lesser-known member of this tribe, is characterised by unique morphological traits, including distinctive patterns of lemma epidermis. During field studies in the upper Kurram Valley, Pakistan, we found a new species, <i>Neotriniakurramica</i>, which is described here. This perennial grass exhibits distinct morphological features, that differentiate it from previously known species. It is characterised by having up to 8.5 mm long ligules of cauline leaves, up to 15 cm long panicles bearing up to 41 spikelets, subequal glumes, lemma bearing two apical lobes, palea almost equal to lemma, 0.9-1.2 mm long obtuse callus and 50-70 mm long scabrid awns. Figures illustrating the new taxon and a comparison of distinguishing characters of the species representing the genus <i>Neotrinia</i> are presented.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"253 ","pages":"287-294"},"PeriodicalIF":1.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11929003/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143692928","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 new species of <i>Sedum</i> (Crassulaceae) from eastern China based on morphological and molecular evidence.","authors":"Jing-Min Dai, Yu Xiong, Pan Li, Yue-Liang Xu, Qiang Fan","doi":"10.3897/phytokeys.253.119922","DOIUrl":"10.3897/phytokeys.253.119922","url":null,"abstract":"<p><p><i>Sedumorientalichinense</i>, a new species of Crassulaceae from eastern China, is described and illustrated here. Phylogenetic analysis based on the internal transcribed spacer (ITS) region of nrDNA suggests that the new species belongs to S.sect.Sedum sensu Fu and Ohba (2001) in the \"Flora of China\", and is sister to <i>S.makinoi</i> with high support values (BS = 100, PP = 1). The new species was previously always misidentified as <i>S.makinoi</i>, <i>S.emarginatum</i> or <i>S.baileyi</i>, due to its opposite leaves. <i>Sedumemarginatum</i> can be easily distinguished by its leaf blades with the apex emarginate in which it differs from the other three species. <i>Sedumorientalichinense</i> usually has 2-branched cymes, unlike <i>S.makinoi</i> which is 2- to 4-branched. The new species further differs from <i>S.makinoi</i> in its obovate to obovate-rhombic leaf blades (vs. obovate to obovate-spatulate in the latter) and has shorter stems (6-18 cm vs. 11-28 cm) with less internodes. It can also be easily distinguished from <i>S.baileyi</i> by its slender to sub-woody suberect stems (vs. slender and erect stems) and larger plant height (6-18 cm vs. 3-7 cm).</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"253 ","pages":"271-285"},"PeriodicalIF":1.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11929005/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143692932","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 endemic Brazilian <i>Solanumhexandrum</i> group (Leptostemonum, <i>Solanum</i>, Solanaceae).","authors":"Sandra Knapp, Yuri F Gouvêa, Leandro L Giacomin","doi":"10.3897/phytokeys.253.138216","DOIUrl":"10.3897/phytokeys.253.138216","url":null,"abstract":"<p><p>The Leptostemonum Clade, or the 'spiny solanums', represents half of the species diversity of the large cosmopolitan genus <i>Solanum</i> (Solanaceae). Brazil is a centre of both species and lineage diversity in 'spiny solanums' with a number of lineages occurring mostly only there. Here, we treat the <i>Solanumhexandrum</i> group, a monophyletic species group that is part of the larger and unresolved Erythrotrichum clade <i>sensu lato.</i> The six species treated here are all robust very prickly shrubs with amongst the largest and showiest flowers in <i>Solanum</i> and accrescent calyces in fruit that often completely cover the mature berry. All six species are endemic to the coastal Atlantic forests of south-eastern and north-eastern Brazil. We describe one new species, <i>S.phrixothrix</i> Gouvêa & S.Knapp, <b>sp. nov.</b>, known only from two collections made 200 years apart. Many of the species in the group occur in very small populations around isolated gneissic/granitic inselbergs, a highly threatened habitat in the region. We provide complete nomenclatural details for all recognised species and their synonyms, complete descriptions, distributions including maps, illustrations, common names and uses and preliminary conservation assessments.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"253 ","pages":"199-259"},"PeriodicalIF":1.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11923794/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143670664","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>Pternopetalumshunhuangensis</i> (Apiaceae), a new species from Hunan, China.","authors":"Wei Zhou, Zi-Lin Feng, Long-Ping Tang, Du Deng, Bao-Cheng Wu, Lei Wu","doi":"10.3897/phytokeys.253.142516","DOIUrl":"10.3897/phytokeys.253.142516","url":null,"abstract":"<p><p>Based on field investigations, morphological and molecular systematic studies, a new species, <i>Pternopetalumshunhuangensis</i> (Apiaceae) from Hunan Province, China is described. Diagnostic morphological characters, full description and a detailed illustration are provided. The differences between <i>P.shunhuangensis</i> and morphologically similar species <i>P.tanakae</i> are presented and discussed. Since no population assessment of this species in its whole distribution area is made, it is best to assign a conservation status of 'Data Deficient' (DD) for this species.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"253 ","pages":"261-270"},"PeriodicalIF":1.3,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11923594/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143670661","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>Rorippadaguanensis</i> (Brassicaceae), a new species from eastern China.","authors":"Wei Zhang, Xiao-Yan Xiang, Ting-Shen Han, Jian-Wen Shao, Kai Zhao","doi":"10.3897/phytokeys.253.145997","DOIUrl":"10.3897/phytokeys.253.145997","url":null,"abstract":"<p><p><i>Rorippadaguanensis</i> W.Zhang & K.Zhao (Brassicaceae), a new species from Anhui and Hubei Provinces of eastern China, is described. Its floral morphology resembles <i>R.dubia</i>, with its fruit morphology similar to <i>R.cantoniensis</i>. However, it can be readily distinguished from <i>R.dubia</i> by its inconspicuous stems, oval silicle and from <i>R.cantoniensis</i> by the absence of petals and bracts on its flowers. The complete plastid genome of this new species is 155,594 bp in length. Phylogenetic analyses, based on whole plastid genome sequences of <i>Rorippa</i> species, revealed that <i>R.daguanensis</i> is sister to <i>R.cantoniensis</i>.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"253 ","pages":"189-198"},"PeriodicalIF":1.3,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11920822/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143664143","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":"The rediscovery of <i>Ohwialuteola</i> (Fabaceae, Papilionoideae) after 50 years and comparative analysis of <i>Ohwia</i> species in plastid genome sequence.","authors":"Lei Peng, Yu-Jie Zhang, Yun-Yun Xiao, Chu-Yi Xia, Xin Luo, Wei-Qiang Qin, Dai-Gui Zhang, Qiang Zhou, Ze-Long Nie, Meng-Hua Zhang","doi":"10.3897/phytokeys.253.147019","DOIUrl":"https://doi.org/10.3897/phytokeys.253.147019","url":null,"abstract":"<p><p><i>Ohwialuteola</i> (H. Ohashi & T. Nemoto) H. Ohashi is only known from one collection in Yunnan Province, China. It has not been recollected since its last collection in 1972. Here, we report the rediscovery of the species that means the first new record in Hunan Province, China. Based on fresh material, we present a revised morphological description of <i>O.luteola</i> and conducted sequencing and assembly of the plastid genome. Morphologically, <i>O.luteola</i> is similar to <i>O.caudata</i>, but the former can be easily distinguished by leaflets length/width ratio ranging from 2.5 to 3.6, leaflets apex acute (with an angle of 50°-80°), terminal inflorescences, wings distinctly auriculate at base and inner side indistinctly rugose, and hilum center not over 3/5 length of seed. Molecular phylogenetic analysis confirmed <i>O.luteola</i> is sister to <i>O.caudata</i>.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"253 ","pages":"177-187"},"PeriodicalIF":1.3,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11909597/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143649896","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>Grewiakentingensis</i> (Malvaceae, Grewioideae), a new species from Taiwan.","authors":"Chou-Yi Lin, Chih-Yi Chang, Chiu-Mei Wang, Hsy-Yu Tzeng, Yen-Hsueh Tseng","doi":"10.3897/phytokeys.253.141785","DOIUrl":"https://doi.org/10.3897/phytokeys.253.141785","url":null,"abstract":"<p><p><i>Grewiakentingensis</i> Y.H. Tseng, Chih Y.Chang & C.Y.Lin, <b>sp. nov.</b>, a new species found on elevated coral reefs in southern Taiwan, is described. The species was previously misidentified as <i>G.piscatorum</i> Hance. <i>Grewiakentingensis</i> differs from <i>G.piscatorum</i> in its habit (procumbent vs. erect to ascending shrub), leaf length (<2 cm vs. up to 7 cm), breeding system (gynodioecious vs. trioecious), smaller flower diameter, fewer stamens, and smaller pollen grains. Color photographs, line drawings, and pollen images of the new species are provided. Additionally, a lectotype for <i>G.piscatorum</i> is designated and an identification key for the <i>Grewia</i> taxa of Taiwan is presented.</p>","PeriodicalId":20070,"journal":{"name":"PhytoKeys","volume":"253 ","pages":"155-176"},"PeriodicalIF":1.3,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11907245/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143649893","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}