中国薯蓣属基生翅组分类修订

Taxonomic revision of Sect. Opsophyton Uline of Dioscorea Linn. in China

在查阅标本、野外调查和长期引种观察的基础上,对中国薯蓣属(Dioscorea Linn.)基生翅组(Sect.Opsophyton Uline)植物的形态进行了比较和总结,并进行了分类学修订,编制了检索表。结果表明:根据花、果实、叶片和珠芽(零余子)形态,修订后的中国薯蓣属基生翅组包括黄独(D.bulbifera Linn.)及其变种,分别为黄独(原变种)(D.bulbifera var.bulbifera Linn.)、白金山药(D.bulbifera var.albotuberosa Y.F.Zhou,Z.L.Xu et Y.Y.Hang)、异叶黄独(D.bulbifera var.heterophylla Prain et Burkill)、大花黄独(D.bulbifera var.simbha Prain et Burkill)和短序黄独(D.bulbifera var.brachybotryum Y.Y.Hang et Y.F.Zhou)。其中,新变种1个,即短序黄独。将分布于海南的原名为雷公薯处理为异叶黄独。

Based on consulting specimens,field survey,and long-term introduction and observation,morphology of Sect. Opsophyton Uline of Dioscorea Linn. in China was compared and summarized,taxonomic revision was made,and key was compiled. The results show that Sect. Opsophyton of Dioscorea in China after revised includes D. bulbifera Linn. and its varieties,viz. D. bulbifera var. bulbifera Linn.,D. bulbifera var. albotuberosa Y. F. Zhou,Z. L. Xu et Y. Y. Hang,D. bulbifera var. heterophylla Prain et Burkill,D. bulbifera var. simbha Prain et Burkill,and D. bulbifera var. brachybotryum Y. Y. Hang et Y.F. Zhou according to morphology of flower,fruit,leaf,and bulbil. In which,there are one new variety of D. bulbifera var. brachybotryum. ＂Leigongshu＂in Hainan is treated as D. bulbifera var. heterophylla.