中国蓼属植物二新种  

Two New Species of Polygonum from China

作　　者：李安仁[1] 包伯坚[1] 

机构地区：[1]中国科学院植物研究所,北京100093

出　　处：《植物研究》2012年第4期385-388,共4页Bulletin of Botanical Research

摘　　要：报道了中国蓼属两新种。蜀蓼(Polygonum shuense)与大理蓼(P.subscapsum)相似,但基生叶的基部渐狭,沿叶柄下延,边缘具圆齿,花白色,花柱3,离生,瘦果长卵形,无光泽可以区别。察隅蓼(P.chayuum)产西藏,这个新种的茎不分枝,自基部至中部无叶,仅有托叶鞘,叶着生于茎的上部,这些特征奇特,明显不同于其它种类。Polygonum shuense and P. chayuum, two new species of Polygonum from China, are described. P. shuense is similar to P. subscapsum, but differs by the radical leaves crenate at margins, and ahenuate and decurrent at base, flowers white, styles 3 and free, and achenes long ovate and opaque. P. chayuum is distributed in Xizang, with stem unbranched, leaves on the upper part of stem, and only ochreas on the lower part of the stem. Such characters are unique in Polyonum and differ apparently from those of other species.

关 键 词：蓼属 新种 蜀蓼 察隅蓼 中国 

分 类 号：Q949[生物学—植物学]