云南滇东玉山竹属新亚种——陆良玉山竹  

A New Subspecies of Yushania from Eastern Yunnan:Yushania polytricha ssp.nana

作　　者：徐梦蔚 杜凡 石明 张安飞 高永坤 Xu Mengwei;Du Fan;Shi Ming;Zhang Anfei;Gao Yongkun(College of Forestry,Southwest Forestry University,Kunming 650224,China;Luliang Forestry and Grassland Bureau,Luliang 655600,Yunnan,China)

机构地区：[1]西南林业大学林学院,昆明650224 [2]陆良县林业和草原局,云南陆良655600

出　　处：《世界竹藤通讯》2025年第1期74-77,共4页World Bamboo and Rattan

基　　金：云南省基础研究专项重大项目“《云南植被志》研编”(202101BC070002)。

摘　　要：描述了云南省东部陆良县玉山竹属滑竹的新亚种——陆良玉山竹Yushania polytricha ssp.nana Hsueh ex F.Du et M.W.Xu。其与原亚种滑竹Y.polytricha Hsueh et Yi区别在于个体更矮小,秆更短,秆柄更细;箨片毛更少,叶耳边缘具黄褐色纤毛;叶片更小,小横脉清晰。新亚种仅分布于滇东陆良县龙海山及周边海拔2400 m以上的干燥生境,与滑竹分布于滇中、滇西明显不同。A new subspecies of Yushania from Luliang county,Eastern Yunnan province,is described as Y.polytricha ssp.nana Hsueh ex F.Du et M.W.Xu.The subspecies is morphologically distinct from the original Y.polytricha Hsueh et Yi by its smaller size,shorter culms,and more slender culm necks.It is characterized with a lower density of trichomes on the culm sheath blades,yellowish-brown cilia along the auricle margins,and smaller leaf blades with prominent transverse veins.The new subspecies is restrictively distributed in dry habitats above 2400 m on Longhai Mountain and its surrounding areas in Luliang county,which is distinctly different from the distribution of Y.polytricha in central and western Yunnan.

关 键 词：玉山竹属 滑竹 陆良玉山竹 新亚种 云南 

分 类 号：S795[农业科学—林木遗传育种]