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flagellate hawkweed, hawkweed, whip hawkweed

devil's paintbrush, fox-and-cubs, grim-the-collier, King-devil, orange flower hawkweed, orange hawkweed, tawny hawkweed, épervière orangée

Habit Plants 5–12(–20+) cm. Plants 15–35(–60+) cm.
Stems

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

proximally piloso-hirsute (hairs 2–4+ mm), distally piloso-hirsute (hairs 1–4 mm) and stipitate-glandular.

Leaves

basal 8–12+, cauline 0(–2+);

blades spatulate to oblanceolate, 20–45(–130+) × 8–20(–25+) mm, lengths 2–3+ times widths, bases cuneate, margins entire, apices rounded to acute, abaxial faces piloso-hirsute (hairs 1–4+ mm) and stellate-pubescent, adaxial piloso-hirsute (hairs 1–4+ mm).

basal 3–8+, cauline 0(–1+);

blades spatulate to oblanceolate, 45–70(–160+) × 10–35 mm, lengths 3–5+ times widths, bases cuneate, margins entire, apices acute, faces piloso-hirsute (hairs 1–2+ mm) and stellate-pubescent.

Peduncles

piloso-hirsute, stellate-pubescent, and stipitate-glandular.

stellate-pubescent and stipitate-glandular.

Involucres

hemispheric, (9–)12–13 mm.

campanulate, 6–8 mm.

Florets

90–120+;

corollas yellow (often each with abaxial red stripe), 6–10+ mm.

25–120+;

corollas orange (drying scarlet to purplish), 10–14+ mm.

Phyllaries

30–40, apices acuminate, abaxial faces stellate-pubescent, sometimes, piloso-hirsute and stipitate-glandular as well.

13–30+, apices acuminate, abaxial faces piloso-hirsute, stellate-pubescent, and stipitate-glandular.

Calyculi

bractlets 13–15+.

bractlets 5–8+.

Heads

2–4+ in ± umbelliform to corymbiform arrays.

3–7(–12+) in ± umbelliform arrays.

Cypselae

columnar, 1–2.5 mm;

pappi of 25–40+, white bristles in 1 series, 4–5+ mm.

columnar, 1.2–1.5(–2) mm;

pappi of 25–30+, white bristles in 1 series, 3.5–4 mm.

Hieracium flagellare

Hieracium aurantiacum

Phenology Flowering May. Flowering (May–)Jun–Aug(–Sep).
Habitat Disturbed sites, roadsides, forest edges Disturbed sites (fields, lawns, roadsides), bogs, clays, sands
Elevation 10–300(–600+) m (0–1000(–2000+) ft) 10–300(–1000+) m (0–1000(–3300+) ft)
Distribution
from FNA
CT; IN; MA; ME; MI; NH; NY; OH; PA; VA; VT; BC; NB; NS; PE; QC; Europe [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; AR; CA; CO; CT; FL; GA; IA; ID; IL; IN; KY; MA; MD; ME; MI; MN; MT; NC; NH; NJ; NY; OH; OR; PA; RI; SD; TN; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NL; NS; ON; PE; QC; SK; SPM; Europe [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
Discussion

The type of Hieracium flagellare may have resulted from a cross between plants of H. caespitosum and H. pilosella (A. Cronquist 1980).

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

Source FNA vol. 19, p. 284. FNA vol. 19, p. 283.
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. 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
H. abscissum, H. albiflorum, H. alpinum, H. argutum, 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. traillii, H. triste, H. umbellatum, H. venosum, H. vulgatum
Synonyms H. flagellare var. amauracron, H. flagellare var. cernuiforme, H. flagellare var. pilosius, Pilosella flagellaris Pilosella aurantiaca
Name authority Willdenow: Enum. Pl., suppl.: 54. (1814) Linnaeus: Sp. Pl. 2: 801. (1753)
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