【摘要】 本文对中国金合欢属(Acacia Miller)的分类、分布及其区系的起源进行了初步的研究;初步确立了本地区金合欢属植物约13种,3变种,其中包括2个新记录种,2个新变种;它们主要分布在西南及华南热带亚热带地区,尤以云南为最多。中国的金合欢届种类较贫乏,主要属Subgen. Aculeiferum,且几乎都是较原始的“A. pennata”体态,大都处于其分布区的边缘,种间关系较密切,区系比较年轻。该区系是中南半岛金合欢区系的一部分,除Subgen. Heterophyllum是来自澳洲外,其余最终通过印度板块来自非洲。更多还原

【Abstract】 t The Chinese Acacia Miller taxonomy, distribution and possible floristic origin are studied. 16 species, 3 varieties including 2 new varieties ( A. delavayi var. kunmingensis C. Chen et H. Sun and A. pruinescens var. luchunensis C. Chen et H. Sun), 2 first reported species in China ( A. tonkinensis I. Nielsen and A. vie-tnamensis I. Nielsen) are presented. The Acacia species in China are poor, which are all belong to Subgen. Aculeiferum Vassal except species A. confusa Merr. ( Su-bgen. Heterophyllum Vassal) and distribute in the southwest and south of China tropic and subtropic areas, especially in Yunnan, most of these are located at the northern boundary of genus Acacia. The Chinese Acacia flora came from Indo-China Penisula one which finally came from tropic Africa by India Plate running into Asia.更多还原