摘要
杨柳科包含２个亚科、５个属、约５００种；杨亚科由杨属和胡杨属组成，柳亚科由原柳属、钻天柳属和柳属组成；该科广泛自然分布于大约从北纬８２度至南纬５２度的非洲、欧洲、亚洲、南美洲和北美洲。杨属约５０种，分布于欧洲、亚洲、北美洲和非洲北缘；胡杨属约３种，间断分布于热带非洲、古地中海地区和墨西哥；原柳属约５０种，广泛分布于非洲、欧洲、亚洲、南美洲和北美洲；钻天柳属约４种，局限分布于鄂霍次克海和日本海四周地区；柳属约４００种，分布于欧洲、亚洲、北美洲和非洲北缘。初步探讨了杨柳科植物的演化。此外，本文还提供了１个亚科及属的检索表和１幅科的演化格局示意图。
The family Salicaceae includes two subfamilies,five genera and about five hundred species.The subfamily Populoideae consists of two genera,i.e. Populus L.and Balsamiflua Griff.and the subfamily Salicoideae consists of three genera,i.e. Pleiarina Rafin., Chosenia Nakai and Salix L.The family widely and naturally distributes in Africa,Europe,Asia,South America and North America from about 82 degrees north latitude to 52 degrees south latitude.The genus Populus, with about 50 species,occurs in Europe,Asia,North America and the northern fringe of Africa. Balsamiflua ,with about 3 species,disjunctively disperses in tropical Africa,Tethyan region and Mexico. Pleiarina ,with about 50 species,is widespread in Africa,Europe,Asia,South America and North America. Chosenia ,with about 4 species,limitedly ranges in the neighbouring areas of both the Sea Of Ochotsk and the Sea Of Japan. Salix ,with about 400 species,grows in Europe,Asia,North America and the northern fringe of Africa.The problem of the evolution of the family is preliminarily approached.Besides,a key to the subfamilies and genera and a diagram showing the evolutionary pattern of the family are also provided in this paper.
出处
《四川林业科技》
北大核心
1998年第4期9-20,共12页
Journal of Sichuan Forestry Science and Technology
关键词
杨柳科
杨亚科
柳亚科
分类
分布
演化
Salicaceae Mirbel
Populoideae Kimura
Salicoideae
Populus L.
Balsamiflua Griff.
Pleiarina Rafin.
Chosenia Nakai
Salix L.
Classification
Distribution
Evolution
