新疆凤尾藓属植物区系新资料

New information on the flora of Fissidens Hedw. in Xinjiang

在新疆阿尔金山国家级自然保护区和托木尔峰国家级自然保护区苔藓植物的调查采集和标本鉴定的基础上,发现并报道了新疆凤尾藓属的两个新疆新记录种:多形凤尾藓(Fissidens diversifolius Mitt.)和大叶凤尾藓(Fissidens grandifrons Brid.).多形凤尾藓的识别特征为:植物体浅绿色或黄绿色,茎中轴不分化,叶卵形至长椭圆披针形,叶分化边缘局限于叶鞘部或仅见于雌苞叶的鞘部,叶近于全缘,蒴盖圆锥形至短喙状,孢子直径达14～32μm.大叶凤尾藓识别特征为:植物体较大,棕褐色或深绿色,叶硬而不透明,先端钝至弧形,叶上部厚1～6层细胞,鞘部厚1～4层细胞,无气孔,长柄上具颈卵器.对这2种藓类的形态特征进行了详细的描述和图示,并对其生境和地理分布进行了讨论.

During the recent bryological collections and investigations in Altun National Natural Reserve and Tumur Peak National Natural Reserve in Xinjiang,China,two new sspecies of Fissidens Hedw.to Xinjiang are found and reported.They are Fissidens diversifolius Mitt.and Fissidens grandifrons Brid..Among them,F.diversifolius has light green or brownish plants and central strand lacking,with leaves ovate to oblong lanceolate and margin of leaves minutely serrulate to almost entire.Limbidia is found on vaginant laminae or only on apical laminae,with opercula conic to shortly rostrate,and spores of 14-32μm in diam.On the other hand,the main characters of F.grandifrons include large plant body with dark green or brownish color,rigid and non-transparent leaves,obtuse to round leaf apex,apical laminae consisting of 3-6 layers of cells,vaginant laminae consisting of 1-4 layers of cells,capsules without stomata and archegonia on long stalks.In this paper,the taxonomic features,habitet,geographical distribution are described.Meanwhile,the drawing of the new recorded species was made.