26. Hieracium vulgatum Fries, Fl. Hall. 128. 1819.
Hieracium amitsokense Dahlstedt; H. groenlandicum Arvet-Touvet; H. ivigtutense Omang; H. scholanderi Omang; H. sylowii Omang
Plants 30–60(–100+) cm. Stems proximally piloso-hirsute (hairs 1–3+ mm), distally stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute as well (hairs 1–2+ mm). Leaves: basal 3–8+, cauline 1–5+; blades (often purple-mottled) lance-elliptic to lanceolate, 50–100 × 10–50+ mm, lengths 2–5 times widths, bases usually cuneate, sometimes rounded to truncate, margins ± dentate or entire, apices acute, faces usually ± piloso-hirsute (at least near margins, hairs 1–3+ mm), sometimes glabrate. Heads (1–)3–9+ in corymbiform arrays. Peduncles stellate-pubescent and stipitate-glandular. Calyculi: bractlets 13–16+. Involucres ± obconic, 8–10 mm. Phyllaries ca. 21+, apices acute to acuminate, abaxial faces stellate-pubescent and stipitate-glandular. Florets 40–80+; corollas yellow, 13–18 mm. Cypselae columnar, 2.5–3 mm; pappi of 30–40+, stramineous bristles in ± 2 series, ca. 5 mm.
Flowering (Jun–)Jul–Aug. Disturbed sites, openings in thickets; 10–100+ m; Greenland; B.C., N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que.; Conn., Del., Maine, Mass., Mich., Minn., N.H., N.J., N.Y., Oreg., Pa., R.I., Vt., Wash., Wis.; Europe.
The correct name for the species here called Hieracium vulgatum may be H. lachenallii Suter (E. Lepage 1971; E. G. Voss 1972–1996, vol. 3). Plants of H. groenlandicum (stems mostly piloso-hirsute and not stipitate-glandular, corolla lobes distally ciliate) are sometimes treated as distinct from H. vulgatum in a narrow sense (stems usually stipitate-glandular and not piloso-hirsute, corolla lobes not ciliate distally).