西藏紫草科1新记录属——微果草属  

One Newly Recorded Genus Microcaryum of Boraginaceae from Xizang

作　　者：郝加琛[1] 刘全儒[1] 

机构地区：[1]北京师范大学生命科学学院,北京100875

出　　处：《西北植物学报》2015年第9期1906-1908,共3页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金(31370224)

摘　　要：该文报道了西藏地区紫草科1新记录属微果草属(Microcaryum)及1新记录种微果草(Microcaryum pygmaeum(Clarke)Johnst.)。该种发现于西藏隆子县,生于海拔约5 000m的高山草甸。研究了其外部形态、小坚果微形态及花粉形态,并与形态相近种毛果草(Lasiocaryum densiflorum(Duthie)Johnst.)进行了比较。凭证标本保存于北京师范大学动植物标本馆植物标本室(BNU)。The paper reports a new record genus of Boraginaceae,Microcaryum,and a new record species,Microcaryum pygmaeum（Clarke）Johnst.,in Xizang.M.pygmaeum growing in the altitude of 5 000 m,was found in the alpine meadow of Longzi Xizang.The characteristics of its external morphology,nutlet and pollen epidermal micromorphology were studied in detail,and the differences between it and the related species Lasiocaryum densiflorum（Duthie）Johnst.were presented in the paper.The voucher specimen is deposited in the herbarium of Beijing Normal University（BNU）.

关 键 词：紫草科 微果草属 新记录 西藏 

分 类 号：Q949.777.4[生物学—植物学]