国产广义大丁草属的订正及地理分布

A Revision of Gerbera L.ex Cass. (s.lat.) and Its Distribution in China

依据最新广义大丁草属的概念对中国产这一属群的植物进行了订正 ,亦即中国有大丁草属LeibnitziaCass .,火石花属GerberaCass .和兔耳一支箭属Piloselloides (Less .)C .JeffreyexCufod。并对一些名称进行了认真的查考和相应的分类学处理 ,讨论了相应的地理替代与地质历史的关系。经整理 ,中国大丁草属含 4种 ,火石花属可能含 6种 ,兔耳一支箭属含 1种。以横断山为核心的中国西南部也许是该属群的一个多样化中心和分化中心。

The authors made a revision of Gerbera L.ex Cass.(s.lat.) from China in accordance with the updated circumscription of the generic group,which are Leibnitzia Cass., Gerbera Cass.(s.str.) and Piloselloides (Less.) C.Jeffrey ex Cufod.We checked some names,treated them taxonomically and discussed the relationships of the formation of vicarious species among them and the physical history.After the taxonomic treatments,it was shown that there are 4 species of Leibnitzia ,probably 6 species of Gerbera and 1 species of Piloselloides in China.Perhaps the SW China with Hengduan Mountains as its core is a center of diversity and differentiation of the generic group.