Hieracium longiberbe |
Hieracium venosum |
|
---|---|---|
long-bearded hawkweed, longbeard hawkweed |
rattlesnake hawkweed, rattlesnake weed |
|
Habit | Plants 25–50+ cm. | Plants ca. 45 cm. |
Stems | proximally piloso-hirsute (hairs 2–8+ mm), sometimes glabrate, distally glabrous or piloso-hirsute (hairs 2–5+ mm). |
proximally piloso-hirsute (hairs 1–3+ mm) to glabrate, distally usually glabrous, rarely piloso-hirsute. |
Leaves | basal 0(–3+), cauline 6–12+; blades spatulate to oblanceolate, 25–80(–100+) × 8–15(–25+) mm, lengths 3–5 times widths, bases ± cuneate, margins usually entire, rarely denticulate, apices obtuse to acute, abaxial faces piloso-hirsute (hairs 2–5+ mm), adaxial usually piloso-hirsute at margins (hairs 2–5+ mm), rarely glabrous. |
basal 3–6+, cauline 0–1+; blades obovate or elliptic to oblanceolate, 40–60(–120) × 15–35(–50+) mm, lengths 2–3(–4) times widths, bases cuneate, margins usually entire, sometimes denticulate, apices rounded to acute, abaxial faces piloso-hirsute (hairs 2–5 mm) and stellate-pubescent, adaxial glabrous or piloso-hirsute (mostly near margins, hairs 2–3 mm). |
Peduncles | usually stellate-pubescent, sometimes piloso-hirsute and/or stipitate-glandular as well, rarely glabrous. |
usually stipitate-glandular, rarely glabrous or glabrate. |
Involucres | campanulate, 7–10 mm. |
obconic to campanulate, 7–9 mm. |
Florets | 12–24+; corollas yellow, 7–12 mm. |
30–45+; corollas yellow (sometimes pale), 7–11 mm. |
Phyllaries | 12–15+, apices ± rounded, abaxial faces piloso-hirsute and stellate-pubescent. |
12–13+, apices acute, abaxial faces usually stellate-pubescent and stipitate-glandular, rarely glabrous. |
Calyculi | bractlets 9–13+. |
bractlets 6–10+. |
Heads | (3–)6–12+ in corymbiform arrays. |
4–10(–20+) in corymbiform to paniculiform arrays. |
Cypselae | columnar, ca. 3.5 mm; pappi of 32–40+, white or stramineous bristles in ± 2 series, 5–6 mm. |
(usually black, sometimes red-brown) columnar, 3–4 mm; pappi of ca. 50+, stramineous bristles in ± 2 series, 4–5 mm. |
Hieracium longiberbe |
Hieracium venosum |
|
Phenology | Flowering Jul. | Flowering (Apr–)May–Jul(–Sep). |
Habitat | Cliffs | Openings in forests, sandy hillsides |
Elevation | 30–100 m [100–300 ft] | 10–300 m [30–1000 ft] |
Distribution |
OR; WA
|
AL; CT; DC; DE; GA; IL; IN; KY; MA; MD; ME; MI; MO; MS; NC; NH; NJ; NY; OH; OK; PA; RI; SC; TN; VA; VT; WV; ON
|
Discussion | Hieracium longiberbe is known only from along the Columbia River. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Plants of Hieracium venosum with adaxial faces of leaf blades glabrous have been called var. nudicaule. The type of Hieracium marianum Willdenow may have resulted from a cross between plants of H. venosum and H. gronovii or H. scabrum (M. L. Fernald 1943c). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 19, p. 289. | FNA vol. 19, p. 292. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | H. venosum var. nudicaule | |
Name authority | Howell: Fl. N.W. Amer., 395. (1901) | Linnaeus: Sp. Pl. 2: 800. (1753) |
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