阴山荠属一新种兼论该属的演化和地理起源问题  

A NEW SPECIES OF YINSHANIA WITH A DISCUSSION ON THE EVOLUTION AND ORIGIN OF THE GENUS

作　　者：张渝华[1] 

机构地区：[1]浙江省医学科学院药物研究所,杭州310013

出　　处：《云南植物研究》1993年第4期364-368,共5页Acta Botanica Yunnanica

基　　金：国家自然科学基金资助课题

摘　　要：本文描述了阴山荠屑一新种——鄂西阴山荠Yinshania exiensis Y.H.Zhang。新种隶阴山荠系,但形态特征介于阴山荠系的察隅阴山荠和密毛系的叉毛阴山荠之间,分布在鄂西一带。阴山荠属属下系统有2组2系,在研究了本属主要性状特征的演化方向后,本文认为阴山荠组是较原始的一群,小果组是较进化的一群。四川西部及其邻近地区是本属的近代分布区中心或分化中心,本属也可能是从该地区分化起源的。In this paper, a new species——Yinshania exiensis Y. H. Zhang is described. The characters of the new species are similar to those of Y. chayuensis (Ser. Yinshanis) and Y. furcatopilosa (Ser. Henryanae). It is distributed in western Hubei. There are two sections and two series under the genus Yinshania. After the investigating of evolutional direction of the principal characters of Yinshania, it is considered that the Sect. Yinshania is an original group, and the Sect. Microcarpae is an advanced group. Western Sichuan and its near area is the center of distribution or the center of differentiation of Yinshania in morden times . This genus may be originated and differentiated from this area.

关 键 词：十字花科 阴山荠属 起源 进化 

分 类 号：Q949.748.3[生物学—植物学]