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Hieracium longiberbe

long-bearded hawkweed, longbeard hawkweed

Fendler's hawkweed, yellow hawkweed

Habit Plants 25–50+ cm. Plants 8–30(–40+) cm (herbage often glaucous).
Stems

proximally piloso-hirsute (hairs 2–8+ mm), sometimes glabrate, distally glabrous or piloso-hirsute (hairs 2–5+ mm).

proximally piloso-hirsute (hairs 2–5+ mm), distally usually ± piloso-hirsute (hairs 1–3+ mm) and stellate-pubescent, sometimes stipitate-glandular as well.

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 3–8+, cauline 0–1(–3);

blades elliptic or oval to oblanceolate to lanceolate, 20–70 × 12–25(–40) mm, lengths 1.5–6+ times widths, bases cuneate, margins entire or denticulate, apices rounded to acute, faces piloso-hirsute (hairs 1–3+ mm).

Peduncles

usually stellate-pubescent, sometimes piloso-hirsute and/or stipitate-glandular as well, rarely glabrous.

usually stellate-pubescent, sometimes piloso-hirsute and/or stipitate-glandular as well.

Involucres

campanulate, 7–10 mm.

cylindric to campanulate, (10–)12–15+ mm.

Florets

12–24+;

corollas yellow, 7–12 mm.

15–30+;

corollas pale yellow to ochroleucous, 7–13+ mm.

Phyllaries

12–15+, apices ± rounded, abaxial faces piloso-hirsute and stellate-pubescent.

13–16+, apices ± acuminate, abaxial faces usually piloso-hirsute and stellate-pubescent, sometimes stipitate-glandular as well.

Calyculi

bractlets 9–13+.

bractlets 5—8+.

Heads

(3–)6–12+ in corymbiform arrays.

2–5+ in ± corymbiform arrays.

Cypselae

columnar, ca. 3.5 mm;

pappi of 32–40+, white or stramineous bristles in ± 2 series, 5–6 mm.

urceolate, 5–7 mm;

pappi of 50–60+, ± stramineous bristles in 2+ series, 5–8+ mm.

Hieracium longiberbe

Hieracium fendleri

Phenology Flowering Jul. Flowering (May–)Jun–Aug(–Sep).
Habitat Cliffs Pine woods, near springs
Elevation 30–100 m (100–300 ft) 1400–2900 m (4600–9500 ft)
Distribution
from FNA
OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CO; NM; NV; TX; UT; WY; Mexico; Central America (Guatemala)
[WildflowerSearch map]
[BONAP county map]
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. 286.
Parent taxa Asteraceae > tribe Cichorieae > Hieracium Asteraceae > tribe Cichorieae > Hieracium
Sibling taxa
H. abscissum, H. albiflorum, H. alpinum, H. argutum, H. aurantiacum, H. bolanderi, H. brevipilum, H. caespitosum, H. carneum, H. crepidispermum, H. fendleri, H. flagellare, H. greenei, H. gronovii, H. horridum, H. lactucella, H. longipilum, H. megacephalon, H. murorum, H. nudicaule, H. paniculatum, H. parryi, H. pilosella, H. piloselloides, H. pringlei, H. robinsonii, H. sabaudum, H. scabrum, H. schultzii, H. scouleri, H. traillii, H. triste, H. umbellatum, H. venosum, H. vulgatum
H. abscissum, H. albiflorum, H. alpinum, H. argutum, H. aurantiacum, H. bolanderi, H. brevipilum, H. caespitosum, H. carneum, H. crepidispermum, H. flagellare, H. greenei, H. gronovii, H. horridum, H. lactucella, H. longiberbe, H. longipilum, H. megacephalon, H. murorum, H. nudicaule, H. paniculatum, H. parryi, H. pilosella, H. piloselloides, H. pringlei, H. robinsonii, H. sabaudum, H. scabrum, H. schultzii, H. scouleri, H. traillii, H. triste, H. umbellatum, H. venosum, H. vulgatum
Synonyms Crepis ambigua, Chlorocrepis fendleri, H. fendleri var. discolor
Name authority Howell: Fl. N.W. Amer., 395. (1901) Schultz-Bipontinus: Bonplandia (Hanover) 9: 173. (1861)
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