云龙重楼,重楼属（黑药花科）植物一新种∗

摘要

Paris yanchii H. Li, L. -G. Lei & Y. -M. Yang, a new species of Paris Linnaeus (Melanthiaceae), is described and illustrated. It was found under the Pinus yunnanensis+Alnus nepalensis forest, at Guanping Town-ship, Yunlong County, Yunnan Province, China. It is similar to Paris mairei Léveillé in leaf shape and texture, but its petals are often absent or less than sepals, its free portion of the anther connective of stamen is 1-1. 5cm. Its difference from P. pollyphylla Smith var. pseudothibetica H. Li is that petals are absent or less than sepals, pur-ple but becoming green later, stamens purple, lateral veins of leaf blade only 2 to 3 pairs, arcuate and distant. It also differs from P. thibetica Franchet in red seeds without aril.%对黑药花科重楼属的新种云龙重楼进行描述和绘图。该种发现于云南省云龙县关坪乡的云南松+旱冬瓜混交林中，属于侧膜亚属蚤休组。与同组的毛重楼近似，但花瓣常缺如或少于萼片，药隔凸出部分长1~1．5cm。与同组的长药隔重楼的区别在于花瓣缺如或少于萼片，花瓣和雄蕊为淡紫色或紫色，叶脉仅2~3对，弧曲，远离。与同亚属黑籽组的同样有长药隔凸出的黑籽重楼的区别在于：种子红色且无假种皮。