Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to Oregon, east to Idaho, Montana, and Wyoming; also occurring throughout eastern North America.
Habitat: Moist pastures, forest openings, roadsides, and springs, from the lowlands to middle elevations in the mountains, usually where disturbed.
Flowers: June-August
Origin: Introduced from Europe
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bumblebees, bees, butterflies, flies
Perennial from fibrous roots and long rhizomes, the bristly stems 2-9 dm. tall, with milky juice.
Leaves all basal except for 1 or 2 very small cauline leaves, with long bristles on both sides, oblanceolate-linear, up to 1 dm. long.
Heads several in a compact terminal cluster, the corollas all ligulate and bright yellow.
PNW Herbaria: Specimen records of Hieracium caespitosum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Hieracium caespitosum checklist entry
OregonFlora: Hieracium caespitosum information
E-Flora BC: Hieracium caespitosum atlas page
CalPhotos: Hieracium caespitosum photos