河南点地梅属一新记录种——细蔓点地梅

Androsace cuscutiformis,a newly recorded species of Androsace from Henan

细蔓点地梅(Androsace cuscutiformis Franch.)隶属于报春花科(Primulaceae)点地梅属(Androsace L.),多分布于中国的西北和西南的高原山区。2017年河南省西峡县伏牛山首次发现,系河南新记录。据已有资料记载,该种根状茎短,具多数纤维状须根。而我们发现该种根状茎依地势匍匐蔓延乃至如竹鞭状,直径1~2 cm,不明显分节,通常在节处具多数纤维状细根;子房倒卵形。讨论了该种与莲叶点地梅(Androsace henryi Oliv.)区别特征。细蔓点地梅具有2种营养繁殖方式,这2种营养繁殖方式也许能促进局域种群的快速增长,在点地梅属系统发育和进化中具有重要的研究意义和价值。凭证标本现保存于河南农业大学植物标本馆(HEAC)。

Androsace cuscutiformis Franch.belongs to Primulaceae of Androsace L,which is mostly distributed in the plateau mountain areas of northwest and southwest of China.The Taxon was first discovered in 2017 in the Funiu mountains in Xixia county,Henan province as a new record in Henan.According to the existing data,this species has short rhizomes and numerous fibrous roots.However,we found its rhizomes creeping,elongate,or even in the shape of a bamboo whip,with a diameter of 1-2 cm,and not significantly segmented,usually with numerous fibrous fine roots at the nodes,and its ovary obovate.This paper discussed.A.cuscutiformis Franch.had two special modes of vegetative propagation,which may promote the rapid growth of local A.cuscutiformis populations,and have important research significance and value in the development and evolution of Androsace L.Its voucher specimens are now kept in the Herbarium of Henan Agricultural University(HEAC).