中国和越南苔类植物新记录种--柏氏细鳞苔

Lejeunea patersonii (Steph.) Steph. (Lejeuneaceae,Marchantiophyta) New to China and Vietnam

报道了采自中国广西和越南北部地区细鳞苔属新记录种——柏氏细鳞苔[Lejeunea patersonii(Steph.)Steph.]。该种的主要特征为侧叶顶端圆形或钝形,叶边缘具圆齿;腹叶小,远生,宽为茎的1~2倍;叶细胞角质层平滑,三角体不明显或中等大,中部球状加厚缺。该研究对柏氏细鳞苔与其相似种进行了细致的比较讨论,并对柏氏细鳞苔原有的地理分布信息进行了更正,重新确认了该种的地理分布。

Lejeunea patersonii（Steph.）Steph.was reported for the first time from North Vietnam and Guangxi Province,China.The species is characterized by the orbicular leaves with crenulate margins;small,distant underleaves with indistinctly crenulate margins,1-2 times stem width;leaf cell with smooth cuticle,cell walls with small trigones and without intermediate thickenings.Morphological descriptions and illustrations were provided,and a discussion was given for L.patersonii and its allies.The distribution of L.patersonii was recomfirmed by the correction of current confusing information.