(n) large genus of perennial hairy herbs of Europe to western Asia to northwestern Africa and North America; few are ornamental; often considered congeneric with Pilosella, Syn. genus Hieracium
(n) European hawkweed having flower heads with bright orange-red rays; a troublesome weed especially as naturalized in northeastern North America; sometimes placed in genus Hieracium, Syn. Hieracium aurantiacum, Pilosella aurantiaca