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hairy hawkweed, longbeard hawkweed

prickly hawkweed, shaggy hawkweed

Habit Plants 30–75(–200) cm. Plants 5–25(–40+) cm.
Stems

proximally piloso-hirsute (hairs 6–15+ mm), distally piloso-hirsute (hairs 3–10+ mm), sometimes stellate-pubescent as well.

proximally piloso-hirsute (hairs 2–4+ mm), distally piloso-hirsute (hairs 1–3+ mm) and stellate-pubescent.

Leaves

basal 3–8+, cauline (3–)6–12+;

blades oblanceolate, 45–80(–250+) × 12–30(–40+) mm, lengths 4–7+ times widths, bases cuneate, margins entire, apices rounded to acute, faces piloso-hirsute (hairs 3–8+ mm).

basal 3–6+, cauline 3–6+;

blades oblong to spatulate or oblanceolate, (15–)25–75(–150+) × 6–12(–30+) mm, lengths 3–6+ times widths, bases cuneate, margins usually entire, sometimes denticulate, apices obtuse to acute, faces piloso-hirsute (to lanate, hairs 2–4 mm).

Peduncles

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

usually stellate-pubescent, sometimes piloso-hirsute as well (hairs 1–2 mm).

Involucres

campanulate, 6–8(–10) mm.

± cylindric to campanulate, 6–9 (× 3–4) mm.

Florets

30–40(–60);

corollas yellow, ca. 7 mm.

6–12(–15+);

corollas yellow, 8–9 mm.

Phyllaries

12–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular.

12–15+, apices acute to acuminate, abaxial faces usually densely piloso-hirsute (hairs 1–2+ mm), sometimes stellate-pubescent or glabrous.

Calyculi

bractlets 9–13+.

bractlets 5–8+.

Heads

10–20+ in paniculiform to nearly racemiform arrays.

(3–)8–25(–100+) in corymbiform to paniculiform arrays.

Cypselae

urceolate, 3–4+ mm;

pappi of 35–40+, stramineous to sordid bristles in 2+ series, 5.5–6.5 mm.

(tan to red-brown) columnar, 3–3.5 mm;

pappi of ca. 60+, stramineous bristles in ± 2 series, 4–6 mm.

Hieracium longipilum

Hieracium horridum

Phenology Flowering Jul–Sep. Flowering (Jun–)Jul–Sep.
Habitat Fields, prairies, roadsides Boulders, gravels, meadows, pine forests
Elevation 100–400 m (300–1300 ft) 1500–3700 m (4900–12100 ft)
Distribution
from FNA
AR; IA; IL; IN; KS; KY; LA; MI; MN; MO; NE; OH; OK; TN; TX; WI; ON
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[BONAP county map]
from FNA
CA; NV; OR
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[BONAP county map]
Discussion

Hieracium longipilum may be no longer present in Quebec.

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

Source FNA vol. 19, p. 285. FNA vol. 19, p. 292.
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. longiberbe, 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. fendleri, H. flagellare, H. greenei, H. gronovii, 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
Name authority Torrey ex Hooker: Fl. Bor.-Amer. 1: 298. (1833) Fries: Uppsala Univ. Årsskr. 1862: 154. (1862)
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