Hieracium horridum
Uppsala Univ. Årsskr. 1862: 154. 1862.
Plants 5–25 (–40+) cm. Stems proximally piloso-hirsute (hairs 2–4+ mm), distally piloso-hirsute (hairs 1–3+ mm) and stellate-pubescent. Leaves: basal 3–6+, cauline 3–6+; blades oblong to spatulate or oblanceolate, (15–) 25–75 (–150+) × 6–12 (–30+) mm, lengths 3–6+ times widths, bases cuneate, margins usually entire, sometimes denticulate, apices obtuse to acute, faces piloso-hirsute (to lanate, hairs 2–4 mm). Heads (3–) 8–25 (–100+) in corymbiform to paniculiform arrays. Peduncles usually stellate-pubescent, sometimes piloso-hirsute as well (hairs 1–2 mm). Calyculi: bractlets 5–8+. Involucres ± cylindric to campanulate, 6–9 (× 3–4) mm. Phyllaries 12–15+, apices acute to acuminate, abaxial faces usually densely piloso-hirsute (hairs 1–2+ mm), sometimes stellate-pubescent or glabrous. Florets 6–12 (–15+); corollas yellow, 8–9 mm. Cypselae (tan to redbrown) columnar, 3–3.5 mm; pappi of ca. 60+, stramineous bristles in ± 2 series, 4–6 mm.
Phenology: Flowering (Jun–)Jul–Sep.
Habitat: Boulders, gravels, meadows, pine forests
Elevation: 1500–3700 m
Distribution
Calif., Nev., Oreg.
Discussion
Selected References
None.
Lower Taxa
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