This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol3", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Hieracium Pilosella L. Sp. Pl. 800. 1753. Hieracium Pilosella peleterianum Mer. Nouv. Fl. Paris, Ed. 2, 230. 1821.
Stoloniferous, pilose-pubescent throughout; stolons leafy, rooting, slender, 3'-2' long. Scape slender, erect, 4'-15' high, leafless, with a single head, or sometimes 2-4; leaves oblong or spatulate, entire, obtuse or acutish at the apex, narrowed into petioles, often white-tomentose beneath, 1 1/2'-3' long, 4"-8" wide; head 1' broad or more; flowers yellow; principal bracts of the involucre in 1 or 2 series, linear, acuminate, pubescent, usually with 1 or 2 exterior ones; achenes oblong, truncate; pappus a single row of slender bristles.
Hieracum floribundum Wimm. & Grab. Fl. Siles. 22: 204. 1829.
Stoloniferous; plant glaucous-green; scape loosely hirsute and more or less glandular-pubescent, slender, 1°-2 1/2° high, the stolons sometimes 8' long. Basal leaves tufted, narrowly oblanceolate, acutish or obtuse, 2'-6' long, glabrous or very nearly so above, the margins and midvein beneath more or less hirsute; stem-leaves none, or rarely 1 or 2 near the base; flowers several, 1' broad or less, corymbose; peduncles glandular; rays bright yellow; bracts of the involucre in about 2 series, hirsute.
In fields, New Brunswick and Maine to New York. Naturalized from Europe. June-Aug.
H. pratense Tausch, Flora 11: Part 1, Erg. 56. 1828.
Stoloniferous, hirsute or pilose with long hairs, those of the stem blackish. Stem scapose, simple, 1°-2° high, often bearing 1 or 2 leaves below the middle; basal leaves numerous, tufted, light green, oblanceolate to oblong, obtuse, 2'-5' long, 5"-10" wide, narrowed into margined petioles, or to a sessile base, entire, or with few distant minute glandular teeth, hirsute on both sides; heads several or numerous, corymbose-paniculate, 10" wide, or less; flowers yellow; peduncles glandular and often tomentose; bracts of the involucre linear-lanceolate, acuminate, glandular and pilose; achenes columnar, truncate.
Fields and roadsides, Quebec to southern New York and Pennsylvania. Naturalized or adventive from Europe.
Hieraciutn aurantiacum L. Sp. Pl. 801. 1753.
Stoloniferous; stem leafless or rarely with 1 or 2 small sessile leaves, hirsute, slender, 6'-2o' high. Basal leaves hirsute, tufted, spatulate or oblong, obtuse, narrowed at the base, entire, or sometimes slightly denticulate, 2-5' long, 1/4'-1' wide; heads several, short-peduncled, corymbose, 7"-12" broad; peduncles glandular-pubescent; involucre 4"-5" high, its bracts linear-lanceolate, acuminate, imbricated in 2 or 3 series, hirsute and sometimes glandular; flowers orange or red; achenes oblong, truncate; pappus a single row of slender brownish bristles.
In fields, woods and along roadsides, New Brans-wick and Ontario to New York, New Jersey and Pennsylvania. Naturalized from Europe. Grim-the-collier. Devil's- or Flora's-paint-brush. Red daisy. Missionary-weed. June-Sept.