Hieracium scouleri |
Hieracium piloselloides |
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hound-tongue hawkweed, hounds tongue hawkweed, hounds-tongue hawkweed (var. griseum), Scouler's hawkweed, Scouler's woollyweed, western hawkweed, western hawkweed (var. albertinum), woolly weed, woolly-weed (var. scouleri) |
glaucous hawkweed, glaucous King-devil, King devil, tall hawkweed, épervière des florentins |
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Habit | Plants (15–)35–60+ cm. | Plants 15–40(–70+) cm. |
Stems | proximally usually piloso-hirsute (hairs 1–8+ mm) and stellate-pubescent, sometimes glabrous, distally usually piloso-hirsute (hairs 1–8+ mm) and stellate-pubescent, rarely stipitate-glandular as well, sometimes glabrous. |
proximally usually piloso-hirsute (hairs 2–4+ mm), rarely glabrous, distally usually glabrous, sometimes piloso-hirsute (hairs 1–3+ mm), stellate-pubescent, and/or stipitate-glandular. |
Leaves | basal 0(–5+), cauline (3–)5–10+; blades lanceolate, oblanceolate or narrowly oblong to elliptic, 50–100(–200) × 10–25(–35+) mm, lengths (3–)4–8+ times widths, bases cuneate, margins entire or denticulate, apices obtuse to acute, faces usually piloso-hirsute (hairs 1–5+ mm) and stellate-pubescent, rarely glabrous. |
basal 3–8(–20+), cauline 0–2(–4+); blades oblanceolate to lanceolate, 30–100(–150+) × 8–20+ mm, lengths 2.5–8+ times widths, bases cuneate, margins entire or denticulate, apices rounded to acute, faces glabrous or piloso-hirsute (on midribs and at margins, hairs 1–4+ mm). |
Peduncles | usually stellate-pubescent, sometimes piloso-hirsute and/or stipitate-glandular as well, rarely glabrous. |
piloso-hirsute (hairs 1–2+ mm), stellate-pubescent, and stipitate-glandular. |
Involucres | campanulate, 8–10 mm. |
campanulate, 5–7 mm. |
Florets | 20–45+; corollas yellow, 10–12 mm. |
(40–)60–80+; corollas yellow, 6–9 mm. |
Phyllaries | 12–21+, apices rounded to acute, abaxial faces piloso-hirsute, stellate-pubescent, and stipitate-glandular. |
12–18+, apices acute to acuminate, abaxial faces piloso-hirsute (hairs 0.5–1.5+), stellate-pubescent, and stipitate-glandular. |
Calyculi | bractlets 5–13+. |
bractlets 3–12+. |
Heads | (3–)9–25+ in corymbiform to thyrsiform arrays. |
(3–)10–30+ in subumbelliform or corymbiform arrays. |
Cypselae | (red-brown or black) columnar, ca. 3 mm; pappi of 32–40+, white or stramineous bristles in ± 2 series, 6–7 mm. |
columnar, 1.5–2 mm; pappi of 25–40+,white bristles in 1 series, 3–4 mm. |
Hieracium scouleri |
Hieracium piloselloides |
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Phenology | Flowering Jun–Sep. | Flowering (May–)Jun–Aug(–Sep). |
Habitat | Disturbed sites, openings in pine forests and sagebrush, borders of meadows | Disturbed sites |
Elevation | 400–3000 m (1300–9800 ft) | 10–300(–1500) m (0–1000(–4900) ft) |
Distribution |
CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
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CT; DE; GA; IA; IL; IN; MA; MD; ME; MI; MN; MT; NC; NH; NJ; NY; OH; PA; RI; SC; VA; VT; WA; WI; WV; BC; NB; NF; NS; ON; PE; QC; Europe [Introduced in North America]
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Discussion | Plants called Hieracium praealtum Villars ex Gochnat (at least those called H. praealtum var. decipiens W. D. J. Koch) reputedly differ from members of H. piloselloides in having blades of their proximal leaves stellate-pubescent abaxially (M. L. Fernald 1950); such plants may be found in the flora and may merit taxonomic recognition. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 19, p. 289. | FNA vol. 19, p. 285. |
Parent taxa | Asteraceae > tribe Cichorieae > Hieracium | Asteraceae > tribe Cichorieae > Hieracium |
Sibling taxa | ||
Synonyms | H. absonum, H. albertinum, H. chapacanum, H. cynoglossoides, H. scouleri var. albertinum, H. scouleri var. griseum | H. florentinum, Pilosella piloselloides |
Name authority | Hooker: Fl. Bor.-Amer. 1: 298. (1833) | Villars: Prosp. Hist. Pl. Dauphiné, 34. (1779) |
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