广西植物2025，Vol.45Issue(5)：833-845,13.DOI:10.11931/guihaia.gxzw202407018
中国狸尾豆属及其近缘属的形态变异研究
Morphological variation study of Uraria Desv.(Fabaceae)and its related genera in China
摘要
Abstract
Intergeneric and intrageneric classifications of Uraria Desv.and its related genera(Christia Moench and Urariopsis Schindl.)have long been controversial.To explore the patterns of morphological variation of Uraria and its related genraand provide morphological data for the taxonomy,mean analysis,principal component analysis,and cluster analysis of 24 morphological traits based on 296 specimens from 43 populations(3 genera and 15 species)were conducted.The results were as follows:(1)The intergeneric boundary between Uraria and Christia(except for Christia campanulata)was clear,and length of leaf,length and width of terminal leaflet,and whether the calyx enlarged after flowering period were valuable taxonomic traits between genera,while the boundary with Urariopsis was not clear.(2)The interspecific variation within the genus Uraria was significant,length of leaf,length of lateral leaflet and length of standard,types of inflorescence and hairs on rachis could be used as the key taxonomic traits;within Christia,length of leaf,length of stipule,length of terminal leaflet and length of lateral leaflet were of great taxonomic value;within Urariopsis,length of inflorescence was of great taxonomic trait.(3)At an Euclidean distance of 16.5,the 15 species were clustered into four clades,of which Uraria picta and U.crinita were clustered as two monophyletic clades,respectively.The genus Christia(except for C.campanulata)was clustered into an monophyletic clade,and the other nine species of Uraria,Urariopsis,and Christia campanulata of the genus Christia were clustered into one clade.Our results supported that C.campanulata and Urariopsis should be attributed to the genus Uraria.The present study results provide morphological evidence for the taxonomy and evolution of Uraria and its related genera.关键词
豆科/山蚂蝗族/聚类分析/主成分分析/分类学意义Key words
Fabaceae/Desmodieae/cluster analysis/principal component analysis/taxonomic significance分类
生物学引用本文复制引用
和澳祥,段微微,赵雪利..中国狸尾豆属及其近缘属的形态变异研究[J].广西植物,2025,45(5):833-845,13.基金项目
国家自然科学基金(31800170). （31800170）
