湖北泽泻科植物的区系特点和地理分布

湖北泽泻科植物的区系特点和地理分布 THE FLORISTIC FEATURES AND GEOGRAPHICAL DISTRIBUTION OF THE ALISMATACEAE FLORA IN HUBEI 陈家宽 first-author 孙钟祥 王徽勤 本文试图根据现有资料,探讨湖北省泽泻科植物区系特点及其地理分布规律。结果表明:1.湖北泽泻科植物区系的地理成分相当明显地具有东亚亚热带、温带分布的性质。2.湖北与江苏、日本地区泽泻科区系最为密切。3.湖北泽泻科植物主要分布在鄂西南山地沼泽和江汉平原湖沼两个地区。 The present study is mainly based on the materials collected duriug the field exploration in Hubei Province. The results obtained are as Follows: 1. This paper reports 3 genera, 9 species, 2 varieties and 1 form of the Alismataceae in Hubei. Among them, 1 genus and 4 species are considered to be new records to Hubei, 2 new species and 1 new variety are drawn up. 2. The floristie feature of the family is: majority of species are distributed in subtropical and temperate E. Asia. 3. It is most close to the relationship between flora of Alismataceae in Hubei and that in Jiang Su or in Japan. 4. The alismataceae flora of Hubei is chiefly distributed in two regions. one is the Jiang Han Plains, the other is the mountainous region of Southwestern Hubei. 1983-04-01 2021-04-01 4