报春花科一新属种—假珍珠菜

Paralysimachia F. Du, J. Wang et S. S. Yang, a new genus of Primulaceae from Yunnan

摘要: 描述了云南省临沧市邦东大雪山发现的报春花科（Primulaceae）新属—假珍珠菜属（Paralysimachia F. Du, J. Wang et S. S. Yang）。该属与珍珠菜属（Lysimachia）相近，区别在于前者单花被，无花冠，花丝远长于花被，基生胎座而不是特立中央胎座，胚珠8枚以下而非多数。同时定名和描述了该属的模式种—假珍珠菜（Paralysimachia xueshanensis F. Du, J. Wang et S. Y. Yang）。该新属种分布于邦东大雪山山顶海拔3390~3420m范围的亚高山草甸。

Abstract: A new genus of Paralysimachia F. Du, J. Wang et S. S. Yang of Primulaceae has been identified in Bangdong Snow Mountain, Lincang city, Yunnan. It is similar to Lysimachia, but with a single perianth, without corolla, filament much longer than that of perianth, basal placentation instead of freecentral placentation, ovules less than 8. The typus of the new genus has been identified and illustrated as Paralysimachia xueshanensis F. Du, J. Wang et S. Y. Yang, and it is distributing in the alt. of 3390-3420m in the subalpinal steppes at the top of Bangdong Snow Mountain.