一个紧密丛生的一年生草本植物小属；产于北温带和南美及热带非洲和亚洲。
Small genus of densely tufted annual herbs; north temperate regions and South America and tropical Africa and Asia.
一个紧密丛生的一年生草本植物小属；产于北温带和南美及热带非洲和亚洲。
Small genus of densely tufted annual herbs; north temperate regions and South America and tropical Africa and Asia.
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