中国科学院大学学报
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黄淑美
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Hwang Shu-mei
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摘要：
本文分析溲疏属的重要形态特征的演化趋势，讨论亲缘属的系统位置和地理分布及区系特点，分类系统的修订和补充，并编写了分种检索表。认为雄蕊不定数，花瓣覆瓦状排列，花丝无齿，子房半下位的是属于原始性状，而雄蕊定数，花瓣镊合状排列，花丝具齿，子房下位的是进化性状，因此新溲疏组应包括在溲疏属内，该组与中间溲疏组是原始类群，而溲疏组是进化类群。国产52种被分为2组，4亚组和17系。溲疏属基本上是属于北温带分布类型，而我国的横断山脉至秦岭南部和华中一带为本属的现代分布和分化中心。
关键词: 溲疏属, 分类系统, 地理分布
Abstract: Discussed in the present paper are evolutionary trends of important morphological characters of Deutzia, systematic position of several closely related genera, geographical distribution and characteristics of floristic elements. Finally the classificatory revison of the genus is made and a key to species is given. As a result, evolutionary trends of the important morphological characters in Deutzia are suggested; petals from imbricate to valvate, stamens from indefinite to definite, filaments from edentate to dentate, ovary from half-inferior to inferior. Therefore, the section Neodeutzia with valvate corolla and infinite stamens with edentate filaments should be included in this genus. The sections Neodeutzia and Mesodeutizia seem to be better considered as primitive taxa, while the section Deutzia advanced one. There are 52 species of Deutzia in China , which are grouped into two sections ( Sect. Mesodeutzia, Sect. Deutzia), four subsections (Subsect. Deutzia, Subsect. Grandiflorae, Subsect. Stenosepalae, Subsect. Cymosae)and 17 series. Sixty- five species are so far recognised in the genus Deutzia. They are mainly distributed in E. Asia and disjunctively in N. America. China is therefore an area the richest in species of Deutzia in the world, making up 80% of the total species of this genus. The greatest concentration area is in Sichuan (23 species), Yunnan (21 species), Hubei (12 species) and Shanxi (10 species), this is boundary area between Sino-Himalayan subregion and Sino-Japanese subregion, where occur abundant species (including 39 endemic species) and diverse taxa (2 section and 4 subsection). Based on these facts it is proposed that the present center of distribution and differentiation of Deutzia be in the southern part of the Hengduan Mountains, the Qingling Range and C. China.
Key words: Deutzia, Systematics, Geographical distribution
黄淑美. 中国溲疏属的分类与地理分布[J]. 中国科学院大学学报.
Hwang Shu-mei. The Classification and Distribution of Genus Deutzia in China[J]. .
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链接本文: http://journal.ucas.ac.cn/CN/
http://journal.ucas.ac.cn/CN/Y1993/V31/I2/105
