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rough hawkweed

coastal plain hawkweed

Habit Plants (15–)30–60+ cm. Plants ca. 40 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 1–4+ mm) and stellate-pubescent, distally piloso-hirsute and/or stellate-pubescent.

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 4–6, cauline (1–)3–4+;

blades elliptic to obovate, 35–80(–120) × 15–30(–40+) mm, lengths 2–4+ times widths, bases cuneate to rounded (sometimes ± clasping), margins entire or denticulate, apices rounded to obtuse, abaxial faces piloso-hirsute (hairs 1.5–4 mm), sometimes stellate-pubescent as well, adaxial piloso-hirsute.

Peduncles

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

stellate-pubescent and stipitate-glandular.

Involucres

campanulate, 7–9 mm.

campanulate, 8–11 mm.

Florets

(30–)40–60+;

corollas yellow, 9–11 mm.

20–50+;

corollas yellow, 10–12+ mm.

Phyllaries

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

9–13+, apices acute to acuminate, abaxial faces stellate-pubescent and stipitate-glandular.

Calyculi

bractlets 12–15+.

bractlets 5–12+.

Heads

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

(12–)20–50+ in open, corymbiform arrays (lengths of arrays ± 2 times diams.).

Cypselae

columnar, 2.5–3 mm;

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

urceolate, 3.5–4+ mm;

pappi of 32–40+, white to stramineous bristles in 1–2+ series, 5–6.5 mm.

Hieracium scabrum

Hieracium megacephalon

Phenology Flowering Jul–Sep. Flowering (Jan–)Apr–May(–Oct).
Habitat Sandy soils, open, disturbed sites (fields, stream sides), wooded sites Limestone hammocks, pine woods, sands
Elevation 10–300+ m (0–1000+ ft) 0–10+ m (0–0+ 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
FL; GA; SC
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 19, p. 288. 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. 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. longipilum, 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 H. argyraeum
Name authority Michaux: Fl. Bor.-Amer. 2: 86. (1803) Nash: Bull. Torrey Bot. Club 22: 152. (1895)
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