20. Hieracium scouleri Hooker, Fl. Bor.-Amer. 1: 298. 1833.
Hieracium absonum J. F. Macbride & Payson; H. albertinum Farr; H. chapacanum Zahn; H. cynoglossoides Arvet-Touvet; H. scouleri var. albertinum (Farr) G. W. Douglas & G. A. Allen; H. scouleri var. griseum A. Nelson
Plants (15–)35–60+ cm. Stems proximally usually piloso-hirsute (hairs 1–8+ mm) and stellate-pubescent, sometimes glabrous, distally usually piloso-hirsute (hairs 1–8+ mm) and stellate-pubescent, rarely stipitate-glandular as well, sometimes glabrous. Leaves: basal 0(–5+), cauline (3–)5–10+; blades lanceolate, oblanceolate or narrowly oblong to elliptic, 50–100(–200) × 10–25(–35+) mm, lengths (3–)4–8+ times widths, bases cuneate, margins entire or denticulate, apices obtuse to acute, faces usually piloso-hirsute (hairs 1–5+ mm) and stellate-pubescent, rarely glabrous. Heads (3–)9–25+ in corymbiform to thyrsiform arrays. Peduncles usually stellate-pubescent, sometimes piloso-hirsute and/or stipitate-glandular as well, rarely glabrous. Calyculi: bractlets 5–13+. Involucres campanulate, 8–10 mm. Phyllaries 12–21+, apices rounded to acute, abaxial faces piloso-hirsute, stellate-pubescent, and stipitate-glandular. Florets 20–45+; corollas yellow, 10–12 mm. Cypselae (red-brown or black) columnar, ca. 3 mm; pappi of 32–40+, white or stramineous bristles in ± 2 series, 6–7 mm.
Flowering Jun–Sep. Disturbed sites, openings in pine forests and sagebrush, borders of meadows; 400–3000 m; Alta., B.C.; Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.