Hieracium scouleri |
Hieracium robinsonii |
|
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hound-tongue hawkweed, hounds tongue hawkweed, hounds-tongue hawkweed (var. griseum), Scouler's hawkweed, Scouler's woollyweed, western hawkweed, western hawkweed (var. albertinum), woolly weed, woolly-weed (var. scouleri) |
Robinson's hawkweed |
|
Habit | Plants (15–)35–60+ cm. | Plants 10–35+ 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. |
proximally piloso-hirsute (hairs 1–3+ mm) and stellate-pubescent, distally piloso-hirsute (hairs 0.5–1+ mm) and stellate-pubescent. |
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. |
basal 2–4, cauline (2–)4–10; blades (often purple-mottled) oblong to lanceolate, 20–80 × 7–20+ mm, lengths 3–4 times widths, bases cuneate, margins usually dentate, sometimes entire, apices acute to acuminate, abaxial faces glabrous or piloso-hirsute (especially midribs), adaxial glabrous or stellate-pubescent. |
Peduncles | usually stellate-pubescent, sometimes piloso-hirsute and/or stipitate-glandular as well, rarely glabrous. |
piloso-hirsute and stellate-pubescent (not, or rarely, stipitate-glandular). |
Involucres | campanulate, 8–10 mm. |
campanulate to obconic, 10–15 mm. |
Florets | 20–45+; corollas yellow, 10–12 mm. |
30–50+; corollas yellow (lengths unknown). |
Phyllaries | 12–21+, apices rounded to acute, abaxial faces piloso-hirsute, stellate-pubescent, and stipitate-glandular. |
25–35, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular. |
Calyculi | bractlets 5–13+. |
bractlets 10–16. |
Heads | (3–)9–25+ in corymbiform to thyrsiform arrays. |
1–5(–10) in ± corymbiform arrays. |
Cypselae | (red-brown or black) columnar, ca. 3 mm; pappi of 32–40+, white or stramineous bristles in ± 2 series, 6–7 mm. |
columnar, 3–5 mm; pappi of ca. 30, stramineous bristles in ± 2 series, ca. 6 mm. |
Hieracium scouleri |
Hieracium robinsonii |
|
Phenology | Flowering Jun–Sep. | Flowering Jul–Aug. |
Habitat | Disturbed sites, openings in pine forests and sagebrush, borders of meadows | Stream banks and lake shores, sands and clays, rock crevices |
Elevation | 400–3000 m (1300–9800 ft) | 10–300+ m (0–1000+ ft) |
Distribution |
CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
|
ME; NH; NB; NF; NS; QC |
Source | FNA vol. 19, p. 289. | FNA vol. 19, p. 291. |
Parent taxa | Asteraceae > tribe Cichorieae > Hieracium | Asteraceae > tribe Cichorieae > Hieracium |
Sibling taxa | ||
Synonyms | H. absonum, H. albertinum, H. chapacanum, H. cynoglossoides, H. scouleri var. albertinum, H. scouleri var. griseum | H. smolandicum subsp. robinsonii |
Name authority | Hooker: Fl. Bor.-Amer. 1: 298. (1833) | (Zahn) Fernald: Rhodora 45: 317. (1943) |
Web links |
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