中国广西石灰岩地区苦苣苔科一新种——覃塘报春苣苔  

Primulina qintangensis(Gesneriaceae),a New Species from Limestone Areas of Guangxi,China

作　　者：辛子兵 黄章杰 周伟权[2] 黄易 孟德昌 温放 XIN Zibing;HUANG Zhangjie;CHOU Weichuen;HUANG Yi;MENG Dechang;WEN Fang(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,Guangxi 541006,China;Gesneriad Conservation Center of China(GCCC),Guilin Botanical Garden,Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences,Guilin,Guangxi 541006,China)

机构地区：[1]广西壮族自治区中国科学院广西植物研究所,广西喀斯特植物保育与恢复生态学重点实验室,广西桂林541006 [2]中国科学院桂林植物园,中国苦苣苔科植物保育中心,广西桂林541006

出　　处：《西北植物学报》2020年第8期1424-1427,共4页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金(31860047);广西自然科学基金(2017GXNSFAA198006);广西喀斯特植物保育与恢复生态学重点实验室项目(19-050-6);广西植物研究所基本业务费项目(桂植业20009);第21批广西“十百千”人才工程第二层次人选支持项目;中国科学院科技服务网络计划项目(KFJ-3W-No1)。

摘　　要：报道了中国广西石灰岩地区一新种——覃塘报春苣苔(Primulina qintangensis Z.B.Xin,W.C.Chou&F.Wen),本种与光叶报春苣苔[P.leiophylla(W.T.Wang)Y.Z.Wang]近似,但叶轮生,叶片两侧近对称,侧脉3对;花序数5~8,一回分枝,每序1~3朵花;花序梗成熟后近无毛或疏被微柔毛;苞片明显较小,约8 mm×2 mm;雌蕊白色;花盘鲜黄色,可以区别。该种目前只发现有一个种群,成熟个体约3000株,通过IUCN评估标准,该种暂时被评为易危(VU C1)。Primulina qintangensis Z.B.Xin,W.C.Chou&F.Wen,a new species from limestone areas of Guangxi,China is described and illustrated.It resembles P.leiophylla(W.T.Wang)Yin Z.Wang,but can be easily distinguished by a combination of characteristics,especially in its leaves whorled,blade near aequilateral,lateral veins ca.3;cymes 5-8,once-compound,1-3-flowered per cyme;peduncle glabrescent or sparely puberulent;obviously smaller bracts,ca.8 mm×2 mm;pistil white;disc bright yellow.We found only one population with 3000 mature individuals at the type locality.This species is provisionally assessed as Vulnerable(VU C1)using IUCN criteria.

关 键 词：岩生植物 广西植物 石灰岩植物 新分类群 

分 类 号：Q949.778.4[生物学—植物学]