广西苦苣苔科稀有珍贵植物——弥勒苣苔

Paraisometrum W.T.Wang,a newly recorded genus of Gesneriaceae from Guangxi,China

首次报道广西苦苣苔科植物一新记录属:弥勒苣苔属。该属接近金盏苣苔属,但不同在于弥勒苣苔属花冠上唇4浅裂,下唇不分裂,2对雄蕊分别着生于花冠中部及其上方,雌蕊具一个柱头。弥勒苣苔属为中国特有的单型属,仅弥勒苣苔一种,分布于云南东南部和广西西部。该种在广西首次记录,凭证标本存放于广西植物标本馆(IBK)。

Paraisometrum W. T. Wang was firstly collected from western Guangxi, this genus is similar to Isometrum Craib,but differs by having corolla with a 4-lobed upper llp and an undivided lower lip,stamens that are adnata to above the middle of the corolla tube,and the pistil with one stigma. Paraisornetrum is a monotypic genus,with only one species,namely P. mileense W. T. Wang,which at present is only found in southeastern Yunnan and western Guangxi. There is only one distrbution spot in Guangxi. P. rnileense is reported for the first time from Guangxi,the voucher specimens are stored in Herbarium of Guangxi Institute of Botany （IRK）.