中国藓类新记录种——马氏真藓  

Bryum marratii Hook.&Wilson(Bryaceae,Musci)reported new to China

作　　者：刘永英[1] 柴晓亮 廖雨佳 宋晓彤 邵小明[2,3] Liu Yong-Ying;Chai Xiao-Liang;Liao Yu-Jia;Song Xiao-Tong;Shao Xiao-Ming(Department of Biology,Jiaozuo Normal College,Jiaozuo,Henan 454001,China;College of Resources and Environmental Sciences,China Agricultural University,Beijing 100193,China;College of Resources and Environmental Sciences,Tibet Agricultural and Animal Husbandry University,Nyingchi,Tibet 860000,China)

机构地区：[1]焦作师范高等专科学校生物系,河南焦作454001 [2]中国农业大学资源与环境学院,北京100193 [3]西藏农牧学院资源与环境学院,西藏林芝860000

出　　处：《植物科学学报》2023年第2期159-165,共7页Plant Science Journal

基　　金：国家自然科学基金(32060050,41771054);河南省高等学校重点科研项目(21B180008);焦作师范高等专科学校高层次科研培育项目(GPY2020-02);西藏农牧学院柔性人才项目(604419044)。

摘　　要：本文首次报道了马氏真藓(Bryum marratii Hook.&Wilson)在中国的分布。该种的主要识别特征为:植株鲜绿色;叶卵形至卵状椭圆形,强烈内凹、钝尖,边缘平直、不分化,中肋不及顶;孢蒴梨形,蒴盖具短喙。马氏真藓在中国主要分布于西藏阿里地区西南部高海拔地区,偶见于日喀则,多生长于高寒水体或季节性水体堤岸土壤。与世界其他地区同种物种相比,该新分布种植株矮、蒴柄短,叶和叶细胞较小;文中还比较了该新分布种与相似物种的主要形态识别特征。由于马氏真藓居群数量少,且破碎化分布,建议将该种列为中国受保护物种。Bryum marratii Hook.&Wilson is reported new to China.The species is distinguished by the following characters:plants bright green,leaves strongly concave,apex obtuse,margins plane,border lacking,costae ending well below apex;pyriform capsule with rostellate lid.In China,the newly recorded species is mainly distributed in the southwestern Ngari region,occasionally in Shigatse of Tibet,mostly in soil banks of alpine or seasonal water bodies.The B.marratii populations in China differ from those in other areas by smaller plant size,shorter setae,and smaller leaves and leaf cells.The principal distinctive characters that separate B.marratii from similar species within the genus Bryum are discussed.Given the small population size and habitat fragmentation,B.marratii should be classified as a threatened species in China.

关 键 词：真藓属 西藏 中国 

分 类 号：Q949.35[生物学—植物学]