亚洲东北地区心叶柳属的分类问题

On the Problems of the Classification of Toisusu Kimura(Salicaceae) in Northeastern Asia

心叶柳属有时被承认，有时被置于柳属中。本文中，由于心叶柳属与钻天柳属间形态上的连续性和遗传上的亲和性、以及共同体现了柳亚科植物中的一种演化趋势，该二者被合并为一个属；同时作了相应的分类学处理。

The genus Toisusu was sometimes recognized,and it was sometimes merged into the genus Salix.In the present paper,Toisuss and Chosenia are combined because of the morphologic continuity and the senetic affinity between them and embodying an evolutionary trend in subfamily Salicoideae joinly. And the relevant taxonomic treatment has been made.