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Hieracium flagellare Willdenow [family COMPOSITAE]

Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 19,
Names
Hieracium flagellare Willdenow [family COMPOSITAE], Enum. Pl., suppl.:, 54. 1814
Hieracium flagellare var. amauracron (Missback & Zahn) Lepage [family COMPOSITAE]
Hieracium flagellare var. cernuiforme (Naegeli & Peter) Lepage [family COMPOSITAE]
Hieracium flagellare var. pilosius Lepage [family COMPOSITAE]
Pilosella flagellaris (Willdenow) P. D. Sell & C. West [family COMPOSITAE]
Treatment Author(s)
John L. Strother
Information
Plants 5–12(–20+) cm. Stems proximally piloso-hirsute (hairs 2–4+ mm) and stellate-pubescent, distally piloso-hirsute (hairs 1–4 mm), stellate-pubescent, and stipitate-glandular. Leaves: basal 8–12+, cauline 0(–2+); blades spatulate to oblanceolate, 20–45(–130+) × 8–20(–25+) mm, lengths 2–3+ times widths, bases cuneate, margins entire, apices rounded to acute, abaxial faces piloso-hirsute (hairs 1–4+ mm) and stellate-pubescent, adaxial piloso-hirsute (hairs 1–4+ mm). Heads 2–4+ in ± umbelliform to corymbiform arrays. Peduncles piloso-hirsute, stellate-pubescent, and stipitate-glandular. Calyculi: bractlets 13–15+. Involucres hemispheric, (9–)12–13 mm. Phyllaries 30–40, apices acuminate, abaxial faces stellate-pubescent, sometimes, piloso-hirsute and stipitate-glandular as well. Florets 90–120+; corollas yellow (often each with abaxial red stripe), 6–10+ mm. Cypselae columnar, 1–2.5 mm; pappi of 25–40+, white bristles in 1 series, 4–5+ mm.
Phenology
may (spring)
Altitude range
10–300(–600+) m;
Distribution
Europe.USA Conn.USA Ind.USA MaineUSA Mass.USA Mich.USA N.H.USA N.Y.USA OhioUSA Pa.USA Vt.USA Va.Canada B.C.Canada N.B.Canada N.S.Canada P.E.I.Canada Que.
Discussion
The type of Hieracium flagellare may have resulted from a cross between plants of H. caespitosum and H. pilosella (A. Cronquist 1980).
Native/Introduced
introduced;
Hieracium flagellare Willdenow [family COMPOSITAE]
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