大三叶升麻在湖北西部的发现及其植物地理学意义

Discovery of Actaea heracleifolia (Ranunculaceae) in Western Hubei, China and the Phytogeographical Significance

摘要:

通过标本和野外居群活植物观察，确认以前在我国仅记载分布于黑龙江、吉林、辽宁和内蒙古的大三叶升麻（毛茛科）在河北东北部、湖北西部、山东东部也有分布，属于典型的我国中部-东北部间断分布现象。讨论了这一间断分布类型形成的可能原因。

Abstract:

Based on observations of herbarium specimens and living plants in wild populations, Actaea heracleifolia (Ranunculaceae), a species previously recorded in China only from Heilongjiang, Jilin, Liaoning, and Nei Mongol, has been confirmed to occur also in northeastern Hebei, western Hubei, and eastern Shandong. Actaea heracleifolia is thus disjunctively distributed in northern and central China. The cause for the formation of this geographical disjunction is discussed.