1) Asterid dicot genus 2) Genus silybum 3) Medicinal plant 
Silybum (milk thistle) is a genus of two species of thistles, in the daisy family (Asteraceae). The plants are native to the Mediterranean regions of Europe and the Middle East. One species has been introduced elsewhere, including in North America. The name `milk thistle` derives from a feature of the leaves, which are prominently banded with sp.....
[n] - small genus of east African herbs
genus Silybum noun small genus of east African herbs