Compilation
Hieracium pratense

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Name

Identification
Hieracium pratense [family COMPOSITAE ] (stored under name); Verified by Not on sheet.,
Related name
  • Hieracium caespitosum
  • Hieracium pratense

Flora

Entry for Hieracium caespitosum Dumortier [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 caespitosum Dumortier [family COMPOSITAE], Fl. Belg., 62. 1827
Hieracium pratense Tausch [family COMPOSITAE]
Pilosella caespitosa (Dumortier) P. D. Sell & C. West [family COMPOSITAE]
Treatment Author(s)
John L. Strother
Information
Plants 20–75 cm. Stems proximally piloso-hirsute (hairs 1–3+ mm) and stipitate-glandular, sometimes stellate-pubescent as well, distally piloso-hirsute (hairs 1–4+ mm), stellate-pubescent, and stipitate-glandular. Leaves: basal 3–8+, cauline 0–2(–5+); blades oblanceolate to lanceolate, 35–120(–180+) × 12–20+ mm, lengths 2–6(–10+) times widths, bases cuneate, margins entire or denticulate, apices rounded to acute, faces usually piloso-hirsute (hairs 1–3+ mm) and stellate-pubescent, sometimes glabrate. Heads 5–25+ in ± umbelliform or congested, corymbiform arrays. Peduncles piloso-hirsute (hairs 1–2.5 mm), stellate-pubescent, and stipitate-glandular. Calyculi: bractlets 5–8+. Involucres campanulate, 7.5–9 mm. Phyllaries 12–18+, apices acute to acuminate, abaxial faces piloso-hirsute (hairs 1–2.5+), stellate-pubescent, and stipitate-glandular. Florets 25–50+; corollas yellow, 8–12+ mm. Cypselae columnar, 1.5–1.8 mm; pappi of 25–30+, white bristles in 1 series, 4–5(–6) mm.
Phenology
may (spring), jun-aug (summer)
Altitude range
10–300(–1500) m;
Distribution
Europe.USA Conn.USA Del.USA D.C.USA Ga.USA IdahoUSA Ill.USA Ind.USA Ky.USA MaineUSA Md.USA Mass.USA Mich.USA Minn.USA Mont.USA N.H.USA N.J.USA N.Y.USA N.C.USA OhioUSA Pa.USA R.I.USA S.C.USA Tenn.USA Vt.USA Va.USA Wash.USA W.Va.USA Wis.USA Wyo.Canada B.C.Canada Man.Canada N.B.Canada Nfld. and Labr. (Nfld.)Canada N.S.Canada Ont.Canada P.E.I.Canada Que.
Discussion
The type of Hieracium floribundum Wimmer & Grabowski probably resulted from a cross between plants of H. caespitosum and H. lactucella (P. D. Sell and C. West 1976).
Native/Introduced
introduced;

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