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FNA Vol. 19, 20 and 21 Page 282, 283, 293 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 19, 20 and 21 | Asteraceae | Hieracium

36. Hieracium nudicaule (A. Gray) A. Heller, Muhlenbergia. 2: 149. 1906.

Hieracium cynoglossoides Arvet-Touvet var. nudicaule A. Gray, Proc. Amer. Acad. Arts 19: 68. 1883; H. scouleri Hooker var. nudicaule (A. Gray) Cronquist

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.

Flowering Jun–Aug(–Sep). Openings in chaparral, conifer forests; 400–2300 m; Calif., Oreg.


 

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