Fu Long-Fei, Monro Alex, Do Truong Van, Nuraliev Maxim S, Averyanov Leonid V, Wen Fang, Xin Zi-Bing, Maisak Tatiana V, Kuznetsov Andrey N, Kuznetsova Svetlana P, Nguyen Khang Sinh, Wei Yi-Gang
Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, China.
Identification and Naming Department, Herbarium, Royal Botanic Gardens, Kew, London, United Kingdom.
PeerJ. 2019 Jan 10;7:e6188. doi: 10.7717/peerj.6188. eCollection 2019.
(Urticaceae) comprises several hundred herbaceous species distributed in tropical and subtropical Africa, Asia, Australia and Oceania. The greatest species richness occurs on limestone karst in Southeast Asia. Taxonomic revisions of are largely out of date and contradict each other with respect to the delimitation of and Most herbaria in SE Asia and worldwide contain significant amounts of unidentified material. As part of a broader revision of in SE Asia, we present an updated checklist for Vietnam based on field visits, a review of specimens in herbaria worldwide, a review of type material and nomenclature. We recognize 77 taxa (75 species and two infraspecific taxa) of in Vietnam, 23 of which were previously ascribed to . Nineteen of these are new records for the country, i.e., , , , , , , , , , , , , , , , , , and . We place in synonymy of , in synonymy of , in synonymy of , and in synonymy of for the first time. Fourteen taxa (18% of all the recognized taxa) are endemic to Vietnam, which makes one of the richest genera for endemic species in this country; this level of endemism is comparable to levels observed in Orchidaceae. Our checklist suggests that the highest diversity and endemism of occurs in northern Vietnam, and that there is the greatest floristic similarity of northern Vietnam to SW China. The relationship among floristic regions is also investigated. We could find no records of for 33 out of 63 provincial units of Vietnam, including all the southernmost provinces. We propose that further studies on the diversity of in central and southern Vietnam are severely needed.
荨麻科包含数百种草本植物，分布于热带和亚热带的非洲、亚洲、澳大利亚及大洋洲。物种丰富度最高的地区是东南亚的石灰岩喀斯特地貌。荨麻科的分类修订大多已过时，且在荨麻属和艾麻属的界定方面相互矛盾。东南亚及全球的大多数标本馆都存有大量未鉴定的材料。作为对东南亚荨麻科进行更广泛修订的一部分，我们基于实地考察、对全球标本馆标本的审查、模式标本和命名法的审查，给出了一份越南荨麻科的最新名录。我们确认越南有77个荨麻科分类单元（75个物种和2个种下分类单元），其中23个先前被归为艾麻属。其中19个是越南的新记录，即[此处列举19个物种名称，原文未给出具体中文名称，无法准确翻译]。我们首次将[此处列举4个物种名称，原文未给出具体中文名称，无法准确翻译]归为[此处列举对应同义物种名称，原文未给出具体中文名称，无法准确翻译]的异名。14个分类单元（占所有确认分类单元的18%）为越南特有，这使得荨麻属成为该国特有物种最丰富的属之一；这种特有程度与兰科相当。我们的名录表明，荨麻属在越南北部的多样性和特有性最高，且越南北部与中国西南部的植物区系最为相似。我们还研究了植物区系之间的关系。在越南63个省级单位中，有33个没有荨麻属的记录，包括最南端的所有省份。我们建议亟需对越南中部和南部的荨麻属多样性开展进一步研究。
