【摘要】 报道了小石藓属蒙古国新记录种—东亚小石藓(Weissia exserta),并提供了该种详细的形态特征描述,显微彩图和区系地理分布的讨论.该种主要分布于中国和日本,其主要特征是蒴柄伸出雌苞叶,孢蒴长圆形或椭圆形,闭蒴,环带分化,无蒴齿,蒴盖稍分化.更多还原

【Abstract】 The rare moss Weissia exserta(Broth.) P.C. Chen., formerly known from China and Japan,is reported form Khentei Mountains of Mongolia. Distinctive features of this Weissia species are the exserted seta, the oblong-elliptic and cleistocarpous capsules,the presence of annulus, the absence of peristome teeth, and the weakly differentiated operculum. Description, illustration, distribution data and discussion are provided.更多还原