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hairy hawkweed, longbeard hawkweed

Habit Plants 30–75(–200) cm. Plants 25–60+ cm.
Stems

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

proximally glabrous or stellate-pubescent, distally glabrous or 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 5–6+, cauline 0(–1+);

blades oblanceolate to spatulate, 40–80 × 18–45+ mm, lengths 3–5+ times widths, bases cuneate, margins usually entire, apices rounded to obtuse, abaxial faces piloso-hirsute (hairs 1–3+ mm), adaxial glabrous.

Peduncles

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

stellate-pubescent and stipitate-glandular.

Involucres

campanulate, 6–8(–10) mm.

hemispheric to campanulate, 8–10 (× 6–9) mm.

Florets

30–40(–60);

corollas yellow, ca. 7 mm.

30–60+;

corollas yellow, ca. 12 mm.

Phyllaries

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

13–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute as well.

Calyculi

bractlets 9–13+.

bractlets 5–8+.

Heads

10–20+ in paniculiform to nearly racemiform arrays.

8–12+ in corymbiform arrays.

Cypselae

urceolate, 3–4+ mm;

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

(black or red-brown) columnar, 3–4 mm;

pappi of ca. 40+, stramineous bristles in ± 2 series, 6–7 mm.

Hieracium longipilum

Hieracium traillii

Phenology Flowering Jul–Sep. Flowering Jun–Aug.
Habitat Fields, prairies, roadsides Shaley sites
Elevation 100–400 m (300–1300 ft) 1000–1300 m (3300–4300 ft)
Distribution
from FNA
AR; IA; IL; IN; KS; KY; LA; MI; MN; MO; NE; OH; OK; TN; TX; WI; ON
[WildflowerSearch map]
[BONAP county map]
from FNA
KY; MD; OH; PA; VA; WV
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. 293.
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. 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. triste, H. umbellatum, H. venosum, H. vulgatum
Synonyms H. greenii
Name authority Torrey ex Hooker: Fl. Bor.-Amer. 1: 298. (1833) Greene: Pittonia 4: 226. (1900)
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