竹子一新种及二新组合

摘要

本文报道了竹亚科镰序竹属一新种,即丰都镰序竹Drepanostachyum fengduensis Yi,它特产于重庆丰都县。它与坝竹（D.microphyllum（Hseuh et Yi）Keng f.ex Yi）的区别在于笋绿色,无紫斑,箨鞘无毛,箨片直立;叶鞘口两肩无繸毛;叶柄及叶片无毛,易于区别。将脱毛昆明实心竹Fargesia yunnanensis Hsueh et Yi f.detersa Yi et J.Y.Shi组合为脱毛实心竹Fargesia detersa（Yi et J.Y.Shi）Yi et J.Y.Shi,还将产于缅甸的Arundinaria elegans Kurz组合为雅致箭竹Fargesia elegans（Kurz）Yi。%In this paper,a description is given of a new species of the genus Drepanostachyum Keng f.of Bambusoideae from China,D.fengduense Yi,which was found to grow in Fengdu County,Chongqing City,China.The new species is similar to D.microphyllum（Hsueh et Yi） Keng f.ex Yi,but differs by having young culms without fainose,green bamboo shoots without macular,glabrous culm-sheaths,blade erect,leaves without sheath-leaves fimbriate,glabrous petiole and blade.Besides,this paper yet composes two species to Fargesia Franchet.