Hieracium aurantiacum L.
Family: Asteraceae
devil's-paintbrush, grim-the-collier, orange hawkweed, red daisy
Hieracium aurantiacum image
Merel R. Black  
Etymology: Hieracium: classical name hierakion from ancient Greek hierax, "a hawk".  The Roman naturalist Pliny believed that hawks fed on this plant to strengthen their eyesight and thus it became the Greek and Latin name for this and similar plants, called hawkweed.
Plants: erect, perennial, 4"-24" tall forb with milky juice; stems very hairy; root forming mats
Leaves: mostly basal, 1 or 2 smaller ones on the stem, very hairy
Flowers: head 3/4" -1" wide with red to orange rays; inflorescence compact clusters with 5-50 short-stalked heads; blooms June-Oct.
Habitat: disturbed sites
Invasiveness: Invasive - Eradicate!
Conservation Status: Introduced - naturalized; ecologically invasive