Hieracium scouleri |
Hieracium paniculatum |
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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) |
Allegheny hawkweed, panicle hawkweed |
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Habit | Plants (15–)35–60+ cm. | Plants 30–90 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 glabrous, sometimes piloso-hirsute (hairs 3–8+ mm) and/or stellate-pubescent, distally usually glabrous. |
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 0(–2), cauline 6–12+; blades elliptic or oblanceolate to lanceolate, 30–80(–150) × 6–25(–35) mm, lengths 3–6+ times widths, bases cuneate, margins usually toothed, sometimes denticulate or entire, apices acute to acuminate, faces glabrous or piloso-hirsute (hairs 1–4+ mm). |
Peduncles | usually stellate-pubescent, sometimes piloso-hirsute and/or stipitate-glandular as well, rarely glabrous. |
usually glabrous, sometimes stipitate-glandular. |
Involucres | campanulate, 8–10 mm. |
campanulate to cylindric, 6–7 mm. |
Florets | 20–45+; corollas yellow, 10–12 mm. |
8–20(–30); corollas ochroleucous to yellow, 5–8 mm. |
Phyllaries | 12–21+, apices rounded to acute, abaxial faces piloso-hirsute, stellate-pubescent, and stipitate-glandular. |
8–13+, apices acute to acuminate, abaxial faces usually glabrous, sometimes stipitate-glandular. |
Calyculi | bractlets 5–13+. |
bractlets 8–13+. |
Heads | (3–)9–25+ in corymbiform to thyrsiform arrays. |
(6–)12–50+ in corymbiform to paniculiform 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, 2–2.5 mm; pappi of 35–40+, stramineous bristles in ± 2 series, 4–5 mm. |
Hieracium scouleri |
Hieracium paniculatum |
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Phenology | Flowering Jun–Sep. | Flowering (Jul–)Aug(–Oct). |
Habitat | Disturbed sites, openings in pine forests and sagebrush, borders of meadows | Openings in forests |
Elevation | 400–3000 m (1300–9800 ft) | (10–)500–800 m ((0–)1600–2600 ft) |
Distribution |
CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
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AL; CT; DE; GA; IN; KY; MA; MD; ME; MI; NC; NH; NJ; NY; OH; PA; RI; SC; TN; VA; VT; WV; NB; NS; ON; QC
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Discussion | The type of Hieracium scribneri Small may have resulted from a cross between plants of H. paniculatum and H. venosum (A. Cronquist 1980). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 19, p. 289. | FNA vol. 19, p. 287. |
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) | Linnaeus: Sp. Pl. 2: 802. (1753) |
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