Hieracium longipilum |
Hieracium abscissum |
|
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hairy hawkweed, longbeard hawkweed |
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Habit | Plants 30–75(–200) cm. | Plants 40–75+ cm. |
Stems | proximally piloso-hirsute (hairs 6–15+ mm), distally piloso-hirsute (hairs 3–10+ mm), sometimes stellate-pubescent as well. |
proximally usually glabrous, sometimes piloso-hirsute (hairs 3–6+ mm), distally glabrous or stellate-pubescent, sometimes piloso-hirsute (hairs 1–3+ mm) and stipitate-glandular as well. |
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 3–12+, cauline (1–)3–6; blades oblanceolate to lanceolate, 35–120(–200) × 10–25(–30+) mm, lengths 3–6+ times widths, bases cuneate to truncate (distal leaves), margins usually entire, sometimes denticulate or toothed, apices obtuse to acute, faces piloso-hirsute (hairs 2–3+ mm). |
Peduncles | stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute as well. |
piloso-hirsute (hairs 0.5–1+ mm), stellate-pubescent, and stipitate-glandular. |
Involucres | campanulate, 6–8(–10) mm. |
± campanulate, 6–8+ (× 4–5) mm. |
Florets | 30–40(–60); corollas yellow, ca. 7 mm. |
20–24+; corollas yellow, 6–9 mm. |
Phyllaries | 12–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular. |
13–18+, apices ± rounded, abaxial faces piloso-hirsute (hairs 0.5–1+ mm), stellate-pubescent, and stipitate-glandular. |
Calyculi | bractlets 9–13+. |
bractlets 3–8+. |
Heads | 10–20+ in paniculiform to nearly racemiform arrays. |
(5–)12–30(–60+) in paniculiform arrays. |
Cypselae | urceolate, 3–4+ mm; pappi of 35–40+, stramineous to sordid bristles in 2+ series, 5.5–6.5 mm. |
(usually black, sometimes red-brown) columnar, 2–3 mm; pappi of 36–40+, white or stramineous bristles in ± 2 series, 3.5–5 mm. |
Hieracium longipilum |
Hieracium abscissum |
|
Phenology | Flowering Jul–Sep. | Flowering Apr, Jul–Aug. |
Habitat | Fields, prairies, roadsides | Disturbed sites, openings in pine, oak, and pine-oak forests |
Elevation | 100–400 m (300–1300 ft) | 2000–2600 m (6600–8500 ft) |
Distribution |
AR; IA; IL; IN; KS; KY; LA; MI; MN; MO; NE; OH; OK; TN; TX; WI; ON
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AZ; NM; Mexico; Central America |
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. rusbyi | |
Name authority | Torrey ex Hooker: Fl. Bor.-Amer. 1: 298. (1833) | Lessing: Linnaea 5: 132. (1830) |
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