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 Radula Ait. Hort. Kew. 3: 210. 1789. Aster biflorus Michx. Fl. Bor. Am. 2: 114. 1803. Aster strictus Pursh, Fl. Am. Sept. 556. 1814. Aster Radula var. strictus A. Gray, Syn. Fl. 1: Part 2, 176. 1884. Aster Radula bifiorus Porter, Mem. Torr. Club 5:
Stem glabrous, or puberulent above, slender, corymbosely branched near the summit, or simple, 4'-2° high. Leaves sessile, rough above, more or less pubescent beneath, lanceolate to oblong-lanceolate, acute, sharply serrate, strongly pinnately veined, 2'-3' long, 3"-12" wide; heads several, or sometimes numerous, 1'-1 1/2' broad; involucre hemispheric, its bracts oblong or oblong-spatulate, coriaceous, appressed-pu-bescent, conspicuously ciliolate, their green obtuse or acutish tips very little spreading; rays 20-30, violet, 4"-6" long; achenes glabrous, striate; pappus nearly white.
In swamps, Newfoundland to Delaware, Pennsylvania, Maryland and West Virginia. July-Sept.
Aster Herveyi A. Gray, Man. Ed. 5, 229. 1867.
Stem roughish, at least above, slender, simple or corymbosely branched, rarely paniculate, 1°-3° high, the branches glandular-puberulent. Leaves firm, rough above, pubescent on the veins beneath, the basal and lower ones on slender naked petioles, ovate, dentate with low usually distant teeth, acute at the apex, narrowed, rounded or rarely cordate at the base, 2'-6' long, 1'-3' wide; upper leaves sessile, or narrowed into winged petioles, smaller, entire or nearly so; heads 1'-1 1/2' broad; involucre turbinate or campanulate, its bracts ap-pressed, or sometimes spreading, densely glandular, oblong or spatulate, obtuse or mucronulate; rays 15-25, violet, $"-7" long; achenes minutely pubescent, striate; pappus nearly white.
In dry soil, eastern Massachusetts, Rhode Island, Connecticut and Long Island. Aug.-Oct.
A. turbinellus Lindl. Comp. Bot. Mag. 1: 98. 1835.
Stem slender, paniculately branched, glabrous below, puberulent above, 2°-3° high. Leaves firm, lanceolate, or oblong-lanceolate, entire, ciliate, acute or acuminate, 2'-3' long, the lower and basal ones petioled, the upper sessile, those of the branches much smaller; heads about 1' broad, mostly solitary at the ends of the branches; involucre turbinate, its bracts oblong, coriaceous, obtuse, appressed, imbricated in 5 or 6 series, their tips green only at the apex; rays 10-20, 3"-5" long, violet; pappus tawny; achenes finely pubescent.
Solidago lateriflora L. Sp. Pl. 879. 1753.
Aster diffusus Ait. Hort. Kew. 3: 205. 1789.
Aster miser Nutt. Gen. 2: 158. 1818.
Stem puberulent, or nearly glabrous, slender, divergently branched, 1°-5° high. Basal leaves ovate, slen-der-petioled; stem leaves broadly lanceolate or oblong-lanceolate, mostly acuminate, serrate, 2'-5' long, 6"-12" wide, those of the branches smaller, oblong or linear-oblong; heads 3"-S" broad, racemosely unilateral on the branches, short-peduncled or sessile, usually numerous and crowded; involucre turbinate, its bracts linear-oblong, obtuse or acutish, imbricated in about 4 series, their short green tips appressed or slightly spreading; rays numerous, short, white or pale purple; disk-flowers purple; pappus white; achenes minutely pubescent.
In dry or moist soil, Nova Scotia to western Ontario, south to North Carolina, Louisiana and Texas. Consists of many races, differing in leaf-form, inflorescence and pubescence. Called in Maryland rosemary. Aug.-Oct.