Some comments on biometric in plant taxonomy applied to infraspecific ranks.

关于在植物属种统计中种下等级统计问题的一点看法.

Genera may be subdivided into subgenera, and also, especially in plant taxonomy, into sections, subsection, series, and subseries.

在植物分类学中，属一般可再分为亚属。同样可进一步分为组、亚组，系、亚系等。