Nouns

(n)milk thistle, lady's thistle, Our Lady's mild thistle, holy thistle, blessed thistle, Silybum marianumtall Old World biennial thistle with large clasping white-blotched leaves and purple flower heads; naturalized in California and South America
(n)blessed thistle, sweet sultan, Cnicus benedictusannual of Mediterranean to Portugal having hairy stems and minutely spiny-toothed leaves and large heads of yellow flowers