Elymus duthiei(Melderis)G.Singh(Poaceae,Triticeae),a newly recorded species from China  

中国披碱草属一新记录种——定结披碱草

作　　者：Jiang Liqiong Pu-Bu Dunzhu Ni-Ma Dunzhu Wang Yi Zhu Xinxin Xiang Chunlei 姜利琼;普布顿珠;尼玛顿珠;王毅;朱鑫鑫;向春雷(河南师范大学生命科学学院,河南新乡453007;西藏自治区林业调查规划研究院,拉萨850000;西藏绿景生态工程咨询有限公司,拉萨850000;云南林业和草原科学院森林植物培育与开发利用重点实验室,昆明650201;信阳师范大学生命科学学院,河南信阳464000;中国科学院昆明植物研究所,东亚植物多样性与生物地理学重点实验室,昆明650201)

机构地区：[1]College of Life Sciences,Henan Normal University,Xinxiang,Henan 453007,China [2]Forest Inventory and Planning Institute of Tibet Autonomous Region,Lhasa,850000,China [3]Tibet Lüjing Ecological Engineering Consulting Co.,Ltd.,Lhasa,850000,China [4]Laboratory of Forest Plant Cultivation and Utilization,Yunnan Academy of Forestry&Grassland Science,Kunming 650201,China [5]College of Life Sciences,Xinyang Normal University,Xinyang,Henan 464000,China [6]CAS Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,China

出　　处：《植物科学学报》2024年第4期431-436,共6页Plant Science Journal

基　　金：西藏日喀则和阿里地区野生兰科植物资源调查专项(202007);西藏重点地区野生动植物资源调查项目(ZL202203601)。

摘　　要：Elymus duthiei(Melderis)G.Singh,newly recorded from Xizang,China,is described and illustrated in detail.Morphologically,the species is similar to E.anthosachnoides(Keng)Á.Löve ex B.R.Lu and E.glaberrimus(Keng&S.L.Chen)S.L.Chen but differs from the former in height and diameter of culms,number of nodes,width of leaf blades,and type of trichome and size of spikelets,and from the latter in distribution,height of culms,type of trichome of spikelets,and awn length.Detailed photo plates,descriptions,and distribution data are provided.本文报道了采自西藏定结县的披碱草属一中国新记录种,即定结披碱草(Elymus duthiei(Melderis)G.Singh)。该新记录种形态上与假花鳞草(E.anthosachnoides(Keng)Á.Löve ex B.R.Lu)和光穗披碱草(E.glaberrimus(Keng&S.L.Chen)S.L.Chen)相似,但与前者的差异在于秆的高度和直径、节的数目、叶片宽度、小穗大小及被毛类型,与后者的区别在于分布、秆高度、小穗被毛程度和芒的长度不同。本文提供了定结披碱草的生境照、精细解剖照、描述和分布。

关 键 词：ELYMUS Morphology TRITICEAE China 

分 类 号：S543.9[农业科学—作物学]