Hieracium umbellatum L.
Family: Asteraceae
narrow-leaved hawkweed, northern hawkweed
Hieracium umbellatum 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, 1/2'-5' tall forb with milky juice; stems leafy, lower part usually with long hairs, upper only softly fuzzy; roots not forming mats
Leaves: alternate, lower ones deciduous, remaining ones mostly about the same size with a few sharp, irregularly spaced teeth or lobes, rounded bases sometimes slightly clasping the stem, usually with long hairs beneath but the edges never rough
Flowers: head 5/8"- 1" wide with yellow rays; inflorescence of several, long-stalked heads in loose, branched clusters; blooms July-Oct.
Habitat: dry; woods, forests, prairies, cliffs; in sandy soil
Flora of North America: Flora of North America
Conservation Status: Native