峨眉山细辛属的分布及其与系统分类的关系

峨眉山细辛属植物共有6种1变种,分属于2亚属3组,它们的垂直替代现象较为明显,从山脚至山顶,依次由花脸细辛Asarum chingchengense。尾花细辛A.cauidigerum.花叶尾花细辛A.caudige-erum var.cardiophyllum、牛蹄细辛A.delavavi、长毛细辛A.pul-chellum、短尾细辛A.caudigerellvm和单叶细辛A.himalaicum组成垂直带谱。

THE GEOGRAPHICAL DISTRIBUTION OF GENUS ASARUM IN MT.EMEI OF CHINA IN RELATION TO SYSTEMATICS

There are six species and one variety of genus Asarum in Mt. Emei belonging to three sections in two subgenera. From the foot to the top of the mountains, these species are distri-buted following a proper order, Asarum chingehengense Cheng et Yang, A. caudigerum Hance, A. caudigerum var. cardiophyllum(Fr.) Cheng et Yang, A. delavayi Fr., A. pulchellum Hemsl.,A. caudigerellum Cheng et Yang and A. himalaicum Hook. f. et Thoms. In the region of evergreen broad-leaf forest (800-1500m alt.), five species and one variety are distributed, which make over 85% of all. Here remarkable differentiation can be obserated. The vertical distribution of Asarum in Mt. Emei arein accordance with their syste matic relations.