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1. chinaXiv:202008.00047 [pdf]

Discovery of a rare genus Litostigma (Gesneriaceae) from northern Vietnam with?the supplementary description of L. crystallinum

LU Zhaocen; ?NGUYEN Khang Sinh; PHAN Ke Loc; TRAN Thi Phuong Anh; ?XU Weibin
Subjects: Biology >> Botany >> Applied botany

The Sino-Vietnamese limestone karsts show specially high levels of plant?diversity among Indo-China floras,and also are biodiversity hotspots in the world,and many new species or genera of Gesneriaceae have been found there recently. The?genus Litostigma Y.G. Wei, F. Wen & M. M?ller (Gesneriaceae) was reported firstly?from limestone areas of southwestern China in 2010, included two species, namely?Litostigma coriaceifolium Y.G. Wei, F. Wen & M. M?ller (Typus generis) from?southwestern Guizhou, and Litostigma crystallinum Y.M. Shui & W.H. Chen from?southeastern Yunnan. We fortunately found Litostigma crystallinum from Ha Giang,?northern Vietnam, and reported here to sufficiently know the diversity of?Gesneriaceae in Vietnam. The description of Litostigma crystallinum was?supplemented base on the collections from Ha Giang, northern Vietnam, and the?habitat photos were also provided. The discovery of Litostigma crystallinum from?northern Vietnam demonstrates the closely floristic relationship between northern?Vietnam and southern China once again. The new localities are also very important?for the conservation of Litostigma crystallinum.

submitted time 2020-08-03 From cooperative journals:《广西植物》 Hits8615Downloads925 Comment 0

2. chinaXiv:201809.00097 [pdf]

越南苦苣苔科植物国家级分布新纪录——大苞漏斗苣苔

NGUYEN Khang Sinh; 温放
Subjects: Biology >> Botany >> Applied botany

漏斗苣苔属 Raphiocarpus Chun 是分布于中国至中南半岛一带的小属,主要产于我 国华南西南抵越南北部至中部,但之前两国共有分布的本属物种仅有 3 种。大苞漏斗苣苔 R. begoniifolius (Lévl.) Burtt 一度被认为是中国的特有种,仅分布在广西西北部、贵州西南部、 云南东南部和湖北西北部,未见在越南的报道。本文首次报道了越南植物区系中大苞漏斗苣 苔的国家级分布新纪录,使得两国共有分布的本属物种上升到了 4 个,并着重讨论了大苞漏 斗苣苔与其近缘种长筒漏斗苣苔 R. macrosiphon (Hance) Burtt 的区别特征,进一步完善了越 南所分布的漏斗苣苔属植物检索表。同时根据两国的各自与联合野外考察工作对本种的濒危 现状进行了讨论,为中越两国开展该种乃至本属植物的保育提供了直接的证据。凭证标本存 于越南生物资源与生态研究所标本馆(HN)。

submitted time 2018-09-07 From cooperative journals:《广西植物》 Hits2762Downloads683 Comment 0

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