Synonym:  Hieracium caespitosum  Dumortier
    
Synonym:  Hieracium pratense  Tausch

              

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Perennials.  Sap is milky white.  Short, stout stolons and long rhizomes are produced.  Colonies, when formed, tend not to be very extensive.  Stems are scapose, densely covered with a variety of hairs, including minute, stellate (branched) hairs, bulbous-based, long bristles and stalked glands. Typical height is 6 to 18 inches.

Inflorescences consist of compact clusters of a few flower heads on short peduncles located at the tops of stems.

Flower heads are ligulate.  All florets are bisexual and fertile.  Corollas are bright yellow.  Involucres are 7.5-9.0 mm high.   Involucral bracts are densely covered with black, stalked glands and minute, stellate hairs.

Basal leaves (persistent throughout much of the season), are oblanceolate to elliptic, 5-12 times as long as wide, and covered with both long bristles and stellate hairs.  Stem leaves, if present, are few, and are much smaller than basal leaves, often nearly inconspicuous.

Plants of fields, lawns and open, disturbed ground.  Flowers May to June.  Not native.

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Similar species include:  Pilosella aurantiaca and Pilosella piloselloides..

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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