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Hieracium longiberbe

long-bearded hawkweed, longbeard hawkweed

field hawkweed, King devil, meadow hawkweed, yellow hawkweed, yellow King-devil

Habit Plants 25–50+ cm. Plants 20–75 cm.
Stems

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

proximally piloso-hirsute (hairs 1–3+ mm) and stipitate-glandular, sometimes stellate-pubescent as well, distally piloso-hirsute (hairs 1–4+ mm), stellate-pubescent, and stipitate-glandular.

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 0–2(–5+);

blades oblanceolate to lanceolate, 35–120(–180+) × 12–20+ mm, lengths 2–6(–10+) times widths, bases cuneate, margins entire or denticulate, apices rounded to acute, faces usually piloso-hirsute (hairs 1–3+ mm) and stellate-pubescent, sometimes glabrate.

Peduncles

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

piloso-hirsute (hairs 1–2.5 mm), stellate-pubescent, and stipitate-glandular.

Involucres

campanulate, 7–10 mm.

campanulate, 7.5–9 mm.

Florets

12–24+;

corollas yellow, 7–12 mm.

25–50+;

corollas yellow, 8–12+ mm.

Phyllaries

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

12–18+, apices acute to acuminate, abaxial faces piloso-hirsute (hairs 1–2.5+), stellate-pubescent, and stipitate-glandular.

Calyculi

bractlets 9–13+.

bractlets 5–8+.

Heads

(3–)6–12+ in corymbiform arrays.

5–25+ in ± umbelliform or congested, corymbiform arrays.

Cypselae

columnar, ca. 3.5 mm;

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

columnar, 1.5–1.8 mm;

pappi of 25–30+, white bristles in 1 series, 4–5(–6) mm.

Hieracium longiberbe

Hieracium caespitosum

Phenology Flowering Jul. Flowering May–Jul(–Aug).
Habitat Cliffs Disturbed sites, stream sides
Elevation 30–100 m (100–300 ft) 10–300(–1500) m (0–1000(–4900) ft)
Distribution
from FNA
OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
CT; DC; DE; GA; ID; IL; IN; KY; MA; MD; ME; MI; MN; MT; NC; NH; NJ; NY; OH; PA; RI; SC; TN; VA; VT; WA; WI; WV; WY; BC; MB; NB; NF; NS; ON; PE; QC; Europe [Introduced in North America]
[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.)

The type of Hieracium floribundum Wimmer & Grabowski probably resulted from a cross between plants of H. caespitosum and H. lactucella (P. D. Sell and C. West 1976).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 19, p. 289. FNA vol. 19, p. 284.
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. carneum, H. crepidispermum, H. fendleri, 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 H. pratense, Pilosella caespitosa
Name authority Howell: Fl. N.W. Amer., 395. (1901) Dumortier: Fl. Belg., 62. (1827)
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