- ragwort, tansy ragwort, ragweed, benweed, Senecio jacobaea - widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
--1 is a kind of weed
--1 is a member of Senecio, genus Senecio - butterweed, ragwort, Senecio glabellus - American ragwort with yellow flowers
--2 is a kind of wildflower, wild flower
--2 is a member of Senecio, genus Senecio