arnica bud(n = noun.plant) fall dandelion, leontodon autumnalis - fall-blooming European herb with a yellow flower; naturalized in the United States;
is a kind of hawkbit

arnica, arnica cordifolia, arnica montana, bud, bud brush, bud sagebrush, flower bud, genus arnica, heartleaf arnica, leaf bud, mixed bud, nip in the bud, taste bud