Subjects: Biology >> Botany >> Applied botany submitted time 2023-07-13 Cooperative journals: 《广西植物》
Abstract： Based on literature research, specimens identification and field investigation, we systematically cleared up the early researches of Sedum and conducted an overview for the species diversity of Sedum in Guangxi. There are 17 species was confirmed, among which six species are newly recorded. At first, the research brief histories of Sedum taxonomy in Guangxi were summarized. The following is the revised information for S. polytrichoides Hemsl. Six newly recorded species of Sedum are reported here, which are S. leblancae Hamet., S. lipingense R. B. Zhang, D. Tan & R. X. Wei, S. lungtsuanense S. H. Fu, S. makinoi Maxim., S. subtile Miq., S. tosaense Makino. The morphological feature diagnosis and photographs for these newly recorded species were provided. Finally we also discussed the species diversity and the potential utilization of Sedum in Guangxi. It is hoped to provide background information for the subsequent research and utilization of this genus.
Subjects: Biology >> Botany >> Applied botany submitted time 2020-08-02 Cooperative journals: 《广西植物》
Abstract：卫矛属(Euonymus L.)和沟瓣属(Glyptopetalum Thw.)的系统关系长期以来备受争议。为了理清它们之间的关系，本研究选择沟瓣属12种、卫矛属17种和假卫矛属(MicrotropisWall. ex Meisn.) 2种，共计31个OTUs，测量并统计了56个形态性状，利用聚类分析（UPGMA）和主坐标分析（PCoA）方法进行了数量分类学研究。结果表明：沟瓣属与卫矛属具有较高的表征相似性，二者之间存在的过渡类群有缙云卫矛（E. chloranthoides Yang）和淡绿叶卫矛（E. pallidifolium Hayata）以及海南沟瓣[G. fengii (Chun & F. C. How) Ding Hou]、白树沟瓣[G. geloniifolium (Chun & F. C. How) C. Y. Cheng]。本研究认为将沟瓣属作为卫矛属的一个组—沟瓣组(sect. Glyptopetalum)，放在冬青卫矛组(sect. Ilicifolia) 附近更为合理。对性状的主坐标排序分析显示，叶片长度、叶片宽度、叶侧脉数目、花瓣数目、心室数目、每室胚珠数、花序分支数、是否具有假种皮、蒴果是否开裂、花期与果序梗长度在卫矛属分类中具有重要的价值。
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