Any of various plants of the genus Sempervivum native to the Old World, especially S. tectorum, having a persistent, basal rosette of fleshy leaves and a branching cluster of pinkish or purplish flowers.
英
美
释义
长生草属植物长生草属植物,产于欧洲大陆,尤指屋顶长生草,叶子肥厚,常绿,底部呈圆花型,开有带分支的淡粉色或淡紫色花序
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