中国青藓科植物分类学修订(一):异叶藓属

A Revision of Chinese Brachytheciaceae(Bryophyta)Ⅰ:Kindbergia Ochyra

在对世界异叶藓属(Kindbergia Ochyra)植物进行系统研究基础上,作者对中国分布的该属植物进行了分类学修订。结果表明:(1)中国分布的"树状异叶藓"[K.arbuscula(Broth.)Ochyra]、"异叶藓"[K.praelonga(Hedw.)Ochyra]和密枝燕尾藓[Bryhnia serricuspis(Müll Hal.)Y.F.Wang&R.L.Hu]为K.dumosa(Mitt.)Ignatov&Huttunen的错误鉴定;(2)因树状分枝的植物体、异形的茎枝叶、近及顶的强壮中肋和明显下延的叶基等特征不同于青藓科现存任一类群,故将中国分布的"异叶藓属"植物移入新建属——拟异叶藓属(Pseudokindbergia M.Li,Y.F.Wang,Ignatov&B.C.Tan)中;(3)拟异叶藓属区别于异叶藓属的主要形态特征为:假鳞毛半圆形至三角状半圆形,先端钝或平截;孢蒴倾立至水平;蒴盖圆锥形。(4)到目前为止,中国尚未发现异叶藓属植物的分布。

Based on the study of Kindbergia Ochyra in the world,a revision of Chinese Kindbergia was carried out.Results showed：（1）＂K.arbuscula（Broth.）Ochyra＂,＂K.praelonga（Hedw.）Ochyra＂,and Bryhnia serricuspis（Müll Hal.）Y.F.Wang R.L.Hu previously reported from China are conspecific with K.dumosa（Mitt.）Ignatov Huttunen.（2）The set of characters of somewhat dendroid plant habit,dimorphic leaves,strong and nearly percurrent costa and distinctive leaf base decurrency did not fit well those of the existing genera in the Brachytheciaceae.Thus,all Chinese‘Kindbergia＇species were transferred into the new monotypic genus,Pseudokindbergia M.Li,Y.F.Wang,Ignatov B.C.Tan.（3）Pseudokindbergia differs from Kindbergia in having semi-orbicular to orbicular-triangular,obtuse or truncate pseudopar aphyllia,conic-apiculate operculum,and inclined capsules.（4）Up to date,no Kindbergia species has been found in China.