Hieracium longiberbe |
Hieracium albiflorum |
|
---|---|---|
long-bearded hawkweed, longbeard hawkweed |
white hawkweed, white-flower hawkweed |
|
Habit | Plants 25–50+ cm. | Plants 15–40(–90) cm. |
Stems | proximally piloso-hirsute (hairs 2–8+ mm), sometimes glabrate, distally glabrous or piloso-hirsute (hairs 2–5+ mm). |
proximally usually piloso-hirsute (hairs 1–6+ mm), rarely glabrous, distally glabrous. |
Leaves | basal 0(–3+), cauline 6–12+; blades spatulate to oblanceolate, 25–80(–100+) × 8–15(–25+) mm, lengths 3–5 times widths, bases ± cuneate, margins usually entire, rarely denticulate, apices obtuse to acute, abaxial faces piloso-hirsute (hairs 2–5+ mm), adaxial usually piloso-hirsute at margins (hairs 2–5+ mm), rarely glabrous. |
basal (0–)3–8+, cauline 1–5(–12+); blades oblanceolate, 40–100(–300) × 12–30(–60+) mm, lengths 3–5+ times widths, bases cuneate, margins usually entire, sometimes sinuately toothed, apices obtuse to acute, faces piloso-hirsute (hairs 1–6 mm), rarely glabrous. |
Peduncles | usually stellate-pubescent, sometimes piloso-hirsute and/or stipitate-glandular as well, rarely glabrous. |
usually glabrous, sometimes stipitate-glandular. |
Involucres | campanulate, 7–10 mm. |
± campanulate, (7–)8–10(–11) mm. |
Florets | 12–24+; corollas yellow, 7–12 mm. |
(6–)12–25+; corollas yellow, 9–10 mm. |
Phyllaries | 12–15+, apices ± rounded, abaxial faces piloso-hirsute and stellate-pubescent. |
8–13+, apices acuminate, abaxial faces piloso-hirsute (hairs 1–2+ mm), stellate-pubescent, and stipitate-glandular. |
Calyculi | bractlets 9–13+. |
bractlets 5–12+. |
Heads | (3–)6–12+ in corymbiform arrays. |
(3–)12–50+ in corymbiform to paniculiform arrays. |
Cypselae | columnar, ca. 3.5 mm; pappi of 32–40+, white or stramineous bristles in ± 2 series, 5–6 mm. |
columnar, 2.5–4 mm; pappi of 30–40+, stramineous bristles in ± 2 series, (4–)5–7 mm. |
Hieracium longiberbe |
Hieracium albiflorum |
|
Phenology | Flowering Jul. | Flowering (May–)Jun–Sep. |
Habitat | Cliffs | Chaparral, conifer forests, meadows, stream beds, serpentines, volcanics, around mineral springs |
Elevation | 30–100 m [100–300 ft] | 10–2900 m [30–9500 ft] |
Distribution |
OR; WA
|
AK; CA; CO; ID; MT; NV; OR; SD; UT; WA; WI; WY; AB; BC; NT; QC; SK; Mexico (Chihuahua, Sonora)
|
Discussion | Hieracium longiberbe is known only from along the Columbia River. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 19, p. 289. | FNA vol. 19, p. 292. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Chlorocrepis albiflora | |
Name authority | Howell: Fl. N.W. Amer., 395. (1901) | Hooker: Fl. Bor.-Amer. 1: 298. (1833) |
Web links |
|