Hieracium longipilum |
Hieracium traillii |
|
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hairy hawkweed, longbeard hawkweed |
|
|
Habit | Plants 30–75(–200) cm. | Plants 25–60+ cm. |
Stems | proximally piloso-hirsute (hairs 6–15+ mm), distally piloso-hirsute (hairs 3–10+ mm), sometimes stellate-pubescent as well. |
proximally glabrous or stellate-pubescent, distally glabrous or stellate-pubescent. |
Leaves | basal 3–8+, cauline (3–)6–12+; blades oblanceolate, 45–80(–250+) × 12–30(–40+) mm, lengths 4–7+ times widths, bases cuneate, margins entire, apices rounded to acute, faces piloso-hirsute (hairs 3–8+ mm). |
basal 5–6+, cauline 0(–1+); blades oblanceolate to spatulate, 40–80 × 18–45+ mm, lengths 3–5+ times widths, bases cuneate, margins usually entire, apices rounded to obtuse, abaxial faces piloso-hirsute (hairs 1–3+ mm), adaxial glabrous. |
Peduncles | stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute as well. |
stellate-pubescent and stipitate-glandular. |
Involucres | campanulate, 6–8(–10) mm. |
hemispheric to campanulate, 8–10 (× 6–9) mm. |
Florets | 30–40(–60); corollas yellow, ca. 7 mm. |
30–60+; corollas yellow, ca. 12 mm. |
Phyllaries | 12–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular. |
13–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute as well. |
Calyculi | bractlets 9–13+. |
bractlets 5–8+. |
Heads | 10–20+ in paniculiform to nearly racemiform arrays. |
8–12+ in corymbiform arrays. |
Cypselae | urceolate, 3–4+ mm; pappi of 35–40+, stramineous to sordid bristles in 2+ series, 5.5–6.5 mm. |
(black or red-brown) columnar, 3–4 mm; pappi of ca. 40+, stramineous bristles in ± 2 series, 6–7 mm. |
Hieracium longipilum |
Hieracium traillii |
|
Phenology | Flowering Jul–Sep. | Flowering Jun–Aug. |
Habitat | Fields, prairies, roadsides | Shaley sites |
Elevation | 100–400 m (300–1300 ft) | 1000–1300 m (3300–4300 ft) |
Distribution |
AR; IA; IL; IN; KS; KY; LA; MI; MN; MO; NE; OH; OK; TN; TX; WI; ON
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KY; MD; OH; PA; VA; WV |
Discussion | Hieracium longipilum may be no longer present in Quebec. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 19, p. 285. | FNA vol. 19, p. 293. |
Parent taxa | Asteraceae > tribe Cichorieae > Hieracium | Asteraceae > tribe Cichorieae > Hieracium |
Sibling taxa | ||
Synonyms | H. greenii | |
Name authority | Torrey ex Hooker: Fl. Bor.-Amer. 1: 298. (1833) | Greene: Pittonia 4: 226. (1900) |
Web links |