Hieracium scouleri |
Hieracium lactucella |
|
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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) |
European hawkweed |
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Habit | Plants (15–)35–60+ cm. | Plants 9–20(–35+) 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 piloso-hirsute (hairs 1–2+ mm), sometimes stipitate-glandular as well, distally stellate-pubescent and stipitate-glandular (not piloso-hirsute). |
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 5–8+, cauline 0(–2+); blades spatulate to oblanceolate, 15–40 × 5–12 mm, lengths 3–6+ times widths, bases cuneate, margins entire, apices rounded to acute, abaxial faces glabrous or piloso-hirsute (hairs 1–3+ mm), adaxial glabrous or piloso-hispid (hairs 1–3+ mm), sometimes stellate-pubescent as well. |
Peduncles | usually stellate-pubescent, sometimes piloso-hirsute and/or stipitate-glandular as well, rarely glabrous. |
stellate-pubescent and stipitate-glandular (not piloso-hirsute). |
Involucres | campanulate, 8–10 mm. |
hemispheric, 6–8 mm. |
Florets | 20–45+; corollas yellow, 10–12 mm. |
40–60+; corollas yellow, 8+ mm. |
Phyllaries | 12–21+, apices rounded to acute, abaxial faces piloso-hirsute, stellate-pubescent, and stipitate-glandular. |
16–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute (hairs 0.8–1.5+) as well. |
Calyculi | bractlets 5–13+. |
bractlets 9–13+. |
Heads | (3–)9–25+ in corymbiform to thyrsiform arrays. |
usually 2–5+ in ± umbelliform arrays, sometimes borne singly. |
Cypselae | (red-brown or black) columnar, ca. 3 mm; pappi of 32–40+, white or stramineous bristles in ± 2 series, 6–7 mm. |
columnar, 1–2.5 mm; pappi of 25–40, white bristles in 1 series, 4–5 mm. |
Hieracium scouleri |
Hieracium lactucella |
|
Phenology | Flowering Jun–Sep. | Flowering May–Jul. |
Habitat | Disturbed sites, openings in pine forests and sagebrush, borders of meadows | Pastures, fields |
Elevation | 400–3000 m (1300–9800 ft) | 10+ m (0+ ft) |
Distribution |
CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
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NY; NS; Europe [Introduced in North America] |
Discussion | According to A. E. Roland and M. Zinck (1998), Hieracium auricula Linnaeus and Pilosella auricula (Linnaeus) Schultz-Bipontinus have been misapplied to plants here called H. lactucella (see also discussion at 5. H. caespitosum). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 19, p. 289. | FNA vol. 19, p. 284. |
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 | |
Name authority | Hooker: Fl. Bor.-Amer. 1: 298. (1833) | Wallroth: Sched. Crit., 408. (1822) |
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