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..
Aster patens var. phlogifolius Nees, Gen. & Sp. Ast. 49. 1832.
Similar to the preceding species, usually taller. Leaves larger, lanceolate to oblong-lanceolate, entire, thin, or membranous: acuminate at the apex, strongly auriculate-clasping at the base, roughish above, pubescent beneath, usually narrowed below the middle, sometimes 6' long; heads usually numerous, 1'-2' broad, panicled, or somewhat racemose on the branches; bracts of the involucre lanceolate, glabrate, rather loose, with herbaceous tips; rays numerous, purple-blue.
Aster novae-angliae L. Sp. Pl. 875. 1753.
A. roseus Desf. Cat. Hort. Paris, Ed. 3, 401. 1812.
Stem stout, hispid pubescent, corymbosely branched above, 2°-8° high, very leafy. Leaves lanceolate, entire, rather thin, acute, pubescent, 2'-5' long, 6"-12" wide, clasping the stem by an auriculate or broadly cordate base; heads numerous, 1'-2' broad, clustered at the ends of the branches; involucre hemispheric, its bracts linear-subulate, somewhat unequal, green, spreading, pubescent and more or less glandular, viscid; rays 40-50, linear, 5"-8" long, violet-purple, rarely pink or red, or white; achenes pubescent; pappus reddish-white.
In fields and along swamps, Quebec to Saskatchewan, South Carolina, Alabama, Kansas and Colorado. One of the most beautiful of the genus. Aug.-Oct.
Aster oblongifolius Nutt. Gen. 2: 156. 1818.
Aster oblongif olius var. rigidulus A. Gray, Syn. Fl. I:
Part 2, 179. 1884. Aster Kumleinii Fries; Rydb. Fl. Colo. 354. 1906.
Stem much branched, hirsute-pubescent, 1°-21/2° high, the branches divaricate or ascending. Leaves crowded, oblong, or oblong-lanceolate, sessile by a broad, partly clasping base, usually rigid, entire, acute or mucronulate at the apex, rough or hispidulous on both sides, rough-margined, those of the stem 1'-2' long, 2."-4' wide, those of the branches gradually smaller; heads corymbose, nearly 1' broad; involucre hemispheric, its bracts much imbricated, glandular, aromatic, linear or linear-oblong, the acute green tips spreading; rays 20-30, violet-purple, rarely rose-pink, 3"-5" long; pappus light brown; achenes canescent.
On prairies and bluffs, central Pennsylvania to Minnesota, North Dakota, Nebraska, Colorado, Virginia, Tennessee and Texas. Races differ in leaf-form and pubescence. Plant odorous. Aug.-Oct.