关键词: 悬钩子, 资源, 分布

Abstract: Northwest Yunnan is situated in the south of Hengduan moutains and east slope of Himalayas. It is the centre of Hengduan mountains areas and has typical stereo-climate. This paper reports the Rubus resources in northwest of Yunnan based on field investigation, studies on specimens and literature. It is indicated that northwest Yunnan is very rich in Rubus resources. There are 66 species and 20 varieties of Rubus in northwest Yunnan, among them, 6 species and 1 variety are new distributions to northwest Yunnan, 15 species and 6 varieties are endemic to Yunnan, 10 species and 4 varieties are endemic to northwest Yunnan. Rubus is widely distributed in northwest Yunnan. The lowest altitude of its distribution of the genus in northwest Yunnan is only 740 m and the highest altitude is 4200 m above sea level. Among the known species from northwest Yunnan, 6 species and 2 varieties are herb Rubus, 59 species and 18 varieties are woody Rubus. The distribution of herb Rubus is from 2300 m to 4200 m. The woody Rubus is distributed from 740 m to 4100 m. 10 species of Rubus which have potential cultivation and directly usage values are described in the paper to give suggestion for germplasm preservation and further rational usage of the plant resources.

Key words: Rubus, resources, distribution