内蒙古景天属植物分类及其区系生态地理分布研究

本文试图澄清内蒙古究竟有多少种景天属植物,这些植物在内蒙古的生态分布情况。我们应用形态—地理分类的方法,对内蒙古景天属Sedum植物进行认真研究。研究认为:《内蒙古植物志》第二版记载的北景天(Sedum kamtschaticum Fisch.)和兴安景天(Sedum hsinganicumChu.)应为费菜;确定了兴安景天(Sedum hsinganicum Chu.)和费菜(Phdeimusaizoon L.)为温带亚洲分布种;阔叶景天(Sedum roborowskii Maxim.)为青藏高原东部分布种;藓状景天(Sedum polytrichoides Hemsl.)为中国-日本分布种;内蒙古景天属植物从东部渗入了1种东亚成分,从西南部渗入了1种青藏高原成分。

Research on the Classification and Floristic Ecological and Geographical Distribution of Sedum in Inner Mongolia

The purpose of this study is to make clear how many Sedum plants are there in Inner Mongolia? Where are the ecological distribution of these plants in Inner Mongolia? The results show that Sedum hsinganicum Chu.and Sedum kamtschaticumFisch.in 《Fl.Inner Mongolia》(ed.Second Version Vol.3.1989)should be Phdeimus aizoonL.;It is confirmed that Sedum hsinganicum Chu.and Phdeimus aizoon L.distribute in Aisa temperate zone Sedum roborowskii Maxim.is distributive specie of east of Qing Zang plateau;Sedum polytrichoides Hemsl. is distributive specie of China-Japan;Sedumin Inner Mongolia permeated two members of eastern Asian from east part and one member of Qing Zang plateau from southwest part.