贵州种子植物一新记录种——帽蕊草

A newly recorded seed plant species in Guizhou: Mitrastemon yamamotoi Makino

贵州茂兰国家级自然保护区位于贵州南部,属于裸露型喀斯特,植物资源丰富。近年来,在茂兰自然保护区的野外考察中,发现了一种罕见的植物——帽蕊草(Mitrastemon yamamotoi Makino),为贵州种子植物新记录种。该种原分布于柬埔寨、日本和印度尼西亚及我国的云南、广西、广东、福建和台湾。帽蕊草具有以下识别特征:肉质草本,寄生在木本植物的根上,株高3 cm^8 cm,叶退化为鳞片,雄蕊合生成筒状,套住雌蕊,易于与其它植物种类相区别。该文中还提供了该种的中文形态描述及彩色图片,并对其分布状况进行了报道。

Maolan National Nature Reserve is located in southern Guizhou, and is remarkable for its rich plant re- sources on bare karst. During resent field trips to Maolan National Nature Reserve ,we discovered a newly recorded species in Guizhou-Mitrastemon yamamotoi Makino. The species was previously considered to distribute in Cambodi- a, Japan, Indonesia and in Yunnan, Guangxi, Guangdong, Fujian, Taiwan of China. It has the following characteris- tics ： herb, succulent, parasitic on roots of woody plants, 3-8 cm tall, leaves degenerating to scales, stamens forming a closed tube over pistil. In this paper, we also provided its description in Chinese, its color photo and its distribution status.