中国西南地区叉苔科的订正

A REVISION OF FAMILY METZGERIACEAE FROM SOUTH WESTERN CHINA

本文对我国西南地区叉苔科(Metzgeriaceae)进行了订正,共计2属7种、1亚种、1变种。对西藏、横断山脉及邻区标本作了研究,把喜马拉雅叉苔Metzgeria himalayensis Kashyap并于平叉苔日本亚种M. conjugata subsp. japonica(Hatt.)Kuwah.;把中华叉苔M. sinensis Chen作为狭尖叉苔M. consanguinea Schiffn.的异名。我国东北记载的长梗毛叉苔Apometzgeria longifrondis(Gao)Chang根据其特征,应归于毛叉苔细肋变种A. pubescens(Schrank)Kuwah. var. kinabaluensis Kuwah.本文还报道2个中国新分布种:蓝叉苔M. darjeelingensis Kuwah.背胞叉苔M. novicrassipilis Kuwah.

The genus Metzgeria Raddi in China was originally treated as a single genus in the family Metzgeriaceae until 1984. In some early years before 1984, Y. Kuwahara (1966,1968), a Japanese bryologist, recognized this group to be distinct and treated it under four genera: Metzgeria Raddi., Apometzgeria Kuwah., Austrometzgeria Kuwah., and Apertithallus Kuwah. The present study concerns the family Metzgeriaceae in China, especially in South western China. 7 species, 1 subspecies and 1 variety belonging to two genera are discussed and illustrated, among which, the M. darjeelingensis Kuwah. and M. novicrassipilis Kuwah. are new records in China. Also the key to species is given. In addition to these, the following species are reviewed and revised: M. himalayensis Kashyap and M. Lindbergii Schiffn. placed into M. conjugata Lindb. subsp. japonica (Halt.) Kuwah.; M. sinensis Chen treated as a synonym of M. consanguinea Schiffn. and Apometzgeria longifrondis (Gao ) Chang a one of A. pubescens (Schrank) var. kinabaluensis Kuwah.