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nounlarge genus of perennial hairy herbs of Europe to western Asia to northwestern Africa and North America; few are ornamental; often considered congeneric with Pilosella
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Definition that contains hieracium
- hieracium pilocella European hawkweed having soft hairy leaves; sometimes placed in genus Hieracium
- pilosella aurantiaca 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
- hawkweed any of numerous often hairy plants of the genus Hieracium having yellow or orange flowers that resemble the dandelion
- mouse-ear hawkweed European hawkweed having soft hairy leaves; sometimes placed in genus Hieracium
- pilosella officinarum European hawkweed having soft hairy leaves; sometimes placed in genus Hieracium
- genus pilosella genus of hairy perennial herbs with horizontal rhizomes and leafy or underground stolons; Eurasia and North Africa; often considered congeneric with Hieracium
- orange hawkweed 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
- hieracium aurantiacum 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
- pilosella genus of hairy perennial herbs with horizontal rhizomes and leafy or underground stolons; Eurasia and North Africa; often considered congeneric with Hieracium