ଅର୍ଥ : Biennial Eurasian white hairy thistle having pale purple flowers. Naturalized in North America.
ସମକକ୍ଷ : cotton thistle, onopordon acanthium, onopordum acanthium, scotch thistle
ଅର୍ଥ : Thistle of western North America having white woolly leaves.
ସମକକ୍ଷ : cirsium flodmanii