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rough hawkweed

hairy hawkweed, longbeard hawkweed

Habit Plants (15–)30–60+ cm. Plants 30–75(–200) cm.
Stems

proximally piloso-hirsute (hairs 1.5–5+ mm), sometimes stellate-pubescent as well, distally stellate-pubescent, sometimes stipitate-glandular, rarely piloso-hirsute (hairs 1–2+ mm).

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

Leaves

basal 0(–3), cauline 6–24+;

blades elliptic or oblanceolate to spatulate or lanceolate, (20–)35–80(–120+) × (10–)20–35(–50+) mm, lengths 2–6+ times widths, bases cuneate to rounded-truncate, margins usually entire, sometimes denticulate, apices rounded to obtuse, faces hirtellous to piloso-hirsute (hairs 0.5–1+ mm).

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).

Peduncles

stellate-pubescent and stipitate-glandular (hairs 0.3–0.6+ mm).

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

Involucres

campanulate, 7–9 mm.

campanulate, 6–8(–10) mm.

Florets

(30–)40–60+;

corollas yellow, 9–11 mm.

30–40(–60);

corollas yellow, ca. 7 mm.

Phyllaries

13–21+, apices ± acuminate, abaxial faces stellate-pubescent and stipitate-glandular, rarely, if ever, piloso-hirsute.

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

Calyculi

bractlets 12–15+.

bractlets 9–13+.

Heads

(5–)10–25(–50+) in corymbiform to paniculiform arrays.

10–20+ in paniculiform to nearly racemiform arrays.

Cypselae

columnar, 2.5–3 mm;

pappi of 30–40+, stramineous bristles in ± 2 series, 6–7 mm.

urceolate, 3–4+ mm;

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

Hieracium scabrum

Hieracium longipilum

Phenology Flowering Jul–Sep. Flowering Jul–Sep.
Habitat Sandy soils, open, disturbed sites (fields, stream sides), wooded sites Fields, prairies, roadsides
Elevation 10–300+ m (0–1000+ ft) 100–400 m (300–1300 ft)
Distribution
from FNA
AR; CT; DC; DE; GA; IA; IL; IN; KY; MA; MD; ME; MI; MN; MO; NC; NH; NJ; NY; OH; OK; PA; RI; SC; TN; VA; VT; WI; WV; NB; NS; ON; PE; QC
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from FNA
AR; IA; IL; IN; KS; KY; LA; MI; MN; MO; NE; OH; OK; TN; TX; WI; ON
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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. 288. FNA vol. 19, p. 285.
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. longipilum, H. megacephalon, H. murorum, H. nudicaule, H. paniculatum, H. parryi, H. pilosella, H. piloselloides, H. pringlei, H. robinsonii, H. sabaudum, 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. 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. scabrum var. intonsum, H. scabrum var. leucocaule, H. scabrum var. tonsum
Name authority Michaux: Fl. Bor.-Amer. 2: 86. (1803) Torrey ex Hooker: Fl. Bor.-Amer. 1: 298. (1833)
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