Hieracium nudicaule
Muhlenbergia 2: 149. 1906.
Plants (15–) 20–30 (–50+) cm. Stems proximally usually glabrous, sometimes piloso-hirsute (hairs 1–7+ mm) and/or stellate-pubescent, distally usually glabrous, sometimes piloso-hirsute (hairs 1–7+ mm) and/or stellate-pubescent. Leaves: basal (3–) 5–8, cauline 0–3 (–5); blades lanceolate to lance-elliptic, 50–120 × 6–18 (–30) mm, lengths (3–) 5–8+ times widths, bases cuneate, margins usually entire, sometimes denticulate, apices acute, faces usually piloso-hirsute (hairs 2–7+ mm) and stellate-pubescent, sometimes glabrous or glabrate. Heads (2–) 5–12+ in paniculiform to corymbiform or subumbelliform arrays. Peduncles ± stellate-pubescent, sometimes stipitate-glandular as well. Calyculi: bractlets 8–13+. Involucres ± campanulate, 8–10+ (× 4–6) mm. Phyllaries 8–13+, apices rounded to acute, abaxial faces piloso-hirsute (hairs 0.5–2+ mm), stellate-pubescent, and stipitate-glandular. Florets 20–40+; corollas yellow, 8–10+ mm. Cypselae (black) columnar, 2.5–3 mm; pappi of 40–60+, white or stramineous bristles in ± 2 series, 4–6 mm.
Phenology: Flowering Jun–Aug(–Sep).
Habitat: Openings in chaparral, conifer forests
Elevation: 400–2300 m
Discussion
Selected References
None.
Lower Taxa
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