THE STUDY ON ECOLOGICAL AND BIOLOGIC CHARACTERS OF THE GENUS DYSOSMA IN MOUNTAIN EMEI

This paper deals with the distribution, habitat and biologic characters of Dysosma in Mt, Emei, The results show: 1. In the five species and one variety, there are primitive and advanced forms, It indicates that Mt. Emei is one of the centers of distribution and diversity of the genue. Dysosma; 2. There is obviously a vertical replacement between the species. All of the species prefer the habitat of shady with rich, acid and polygravel soil; 3. There are some differences among the species in growth rhythm and biological characters, pollen fertilitiness and germination condition and natural reproductive potential; 4. The reproductive rate can be increased by root-cutting.