华东植物区系成分与日本植物间的联系

THE FLORISTIC SIMILARITY BETWEEN EAST CHINA AND JAPAN

华东和日本两地为东亚地区重要组成部分，同属于中国－日本森林植物亚区。两地植物区系成分具有较高的相似性，两地共有连香树科（Ｃｅｒｃｉｄｉｐｈｙｌｌａｃｅａｅ）、三尖杉科（Ｃｅｐｈａｌｏｔａｘｃｅａｅ）、领春木科（Ｅｕｐｔｅｌｅａｃｅａｅ）、旌节花科（Ｓｔａｃｈｙｕｒａｃｅａｅ）等东亚特有科。华东和日本两地共有属约６８０多属。如柳杉（Ｃｒｙｐｔｏｍｅｒｉａ）、双花木（Ｄｉｓａｎｔｈｕｓ）、小勾儿茶（Ｂｅｒｃｈｅｍｉｅｌｌａ）等中国－日本分布属。还有为数众多的两地共有种，如涧边草（Ｐｅｌｔｏｂｏｙｋｉｎｉａｔｅｌｌｉｍｏｉｄｅｓ（Ｍａｘｉｍ．）Ｈａｒａ）、黄山梅（ＫｉｒｅｎｇｅｓｈｏｍａｐｏｌａｍａｔａＹａｔａｂｅ）、蛛网萼（ＰｌａｔｙｃｒａｔｅｒａｒｇｕｔａＳｉｅｂ．ｅｔＺｕｃｃ．）、山涧草（ＣｈｉｋｕｓｉｃｈｌｏａａｑｕａｔｉｃａＫｏｉｄｚ．）、舟山新木姜子（Ｎｅｏｌｉｔｓｅａｓｅｒｉｃｅａ（Ｂｌ．）Ｋｏｉｄｚ．）和日本假繁缕（ＴｈｅｌｉｇｏｎｕｍｊａｐｏｎｉｃｕｍＯｋｕｂｏｅｔＭａｋｉｎｏ）等成分。这些共有成分表明了两区系间的密切联系。

East China and Japan are very important parts in subregion Sino-Japanese. There are more similarities between them.Both of them contain the same families endemic to East Asia,such as Cercidiphyllaceae,Cephalotaxaceae, Eupteleaceae, Stachyuraceae etc.Both of them alsoshare many genera of Sino Japanese distribution pattern, such as Cryptomeria,Disanthus,Berchemiella etc.Both of them contain about 830 species of Sino-Japanese distribution pattern,such as Peltoboykinia tellimoides, Kirengeshoma pelmata, Platycrater arguta, Chikusichloaaquatica, Neolitsea sericea, Theligonum japonicam etc. The vicarious species and paleobotany dataalso indicate the closer floristic relatonship between East China and Japan.