新疆红叶藓属植物的分类学研究

Taxonomic Study of Bryoerythrophyllum Chen. in Xinjiang,China

【目的】对新疆红叶藓属进行分类学研究,为新疆及中国苔藓植物的系统研究提供可借鉴的资料。【方法】以形态特征为主的经典分类学方法为基础,结合超微结构和扫描电镜对红叶藓属3种孢子进行扫描,对供试苔藓植物进行鉴定。【结果】新疆红叶藓属现有5种;其中两个新疆新记录种:钝头红叶藓Bryoerythrophyllum brachystegtum和无齿红叶藓Bryoerythrophyllum gymnostomum进行了报道,并对红叶藓属5个种的识别特征、生境和地理分布进行了初步探讨。【结论】通过标本的鉴定,确定新疆红叶藓属现有5种,其中钝头红叶藓和无齿红叶藓为新疆新记录种。新疆红叶藓属的区系地理成分中东亚成分占主要地位。

[ Objective] In this study, the taxonomy of the genus Bryoerythrophyllum （Pottiaceae, Musci） was discussed, which would provide the bryoflora of Xinjiang, China with more information. [ Method ] Classic taxonomic methods combined with ultrastructural observation of the spores of three species under Scanning Electron Microscope （SEM） were adopted. [ Result and Conclusion] By studying the taxonomy of Bryoerythrophyllum in Xinjiang, it has been found that there are totally 5 species, 2 species （B. brachystegittm and B. gymnostomum ） are newly -recorded species in Xinjiang. Each species taxonomic characteristics, geographical distribution and a key to the genus were given. The flora of the genus was also discussed and East Asian Element was the dominant one in Xinjiang.