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[目的]研究甘肃大戟的分类学地位。[方法]根据野外调查、采集,结合标本观察,对江苏分布的乳浆大戟亚属的甘肃大戟(Euphorbia kansuensis Prokh.)和月腺大戟(E.ebraceolata Hayata)的形态特征和分布区等方面进行了研究。[结果《]江苏植物志》记载的月腺大戟和《中国植物志》的甘肃大戟在形态描述的被毛和根形态这2个重要特征上没有明显区别,且相互有交叉,故《中国植物志》认为月腺大戟是甘肃大戟的误用名是合理的,但是其形态描述应修订为:全株有毛或无毛;根为纺锤形至圆柱状;腺体为肾状长圆形。[结论]该研究对于理清甘肃大戟的分类学地位具有重要意义。
[Objective] The research aimed to study the taxonomic status of euphorbia in Gansu Province. [Method] According to field investigation, collection and combination observation, the morphological characteristics and distribution of Euphorbia kansuensis Prokh. And E.ebraceolata Hayata subtropas in Jiangsu were studied. And other aspects of the study. [Result] “Eucalyptus euphorbia” recorded in “Flora of Jiangsu” and “Eucalyptus euphorbiaceae” of “Flora of China” showed no significant difference in the two important characteristics of the morphology of the coat and root, Chinese Flora "that the moon gland Euphorbia is the wrong name of eupolyphaga Gansu is reasonable, but its description should be revised as follows: all hairy or glabrous; root spindle-shaped cylindrical; gland-shaped kidney Oval. [Conclusion] The study is of great significance for clarifying the taxonomic status of Euphorbia in Gansu Province.