Synonym:  Hieracium flagellare  Willd..

              

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Plants of lawns, fields, roadsides.  Flowers May to June.  Not native.

Perennial.  Sap is milky white.  Colony-forming from stolons and rhizomes.  Stems are scapose, densely covered with a combination of stellate hairs, minutely-stalked glands and long-spreading hairs.  Typical height is 5 to 8(-10) inches.

Inflorescences are open, with from 2-4(-5) flower heads

Flower heads are ligulate.  All florets are bisexual and fertile.  Corollas are bright yellow, and often have a red stripe on the lower surface.  Involucres are (9-)10-13 mm high, densely covered with a combination of stellate hairs, minutely-stalked glands, black bristles and long-spreading hairs.  Peduncles tend to be longer than the peduncles of other most similar species, sometimes  attaching at mid-stem.

Basal leaves are persistent throughout the season.  Stem leaves, if present, are quite small and inconspicuous.  Lower surfaces of basal and stolon leaves are covered with stellate hairs, but the hairs are not so dense that they obscure the green surface of the leaf.

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Similar species:  Pilosella caespitosa, Pilosella officinarum.

For additional information on this and other hawkweed species, as well as a list of selected references, see my article, "Understanding Hawkweeds".

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