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..
Nearly glabrous, sometimes glutinous; stems simple, usually somewhat glutinous, 6'-18' high. Lower and basal leaves oblanceolate, obtuse or acutish, dentate, or crenate, 1 1/2'-4' long, 2i"-4" wide, narrowed into slightly margined petioles; stem leaves sessile, lanceolate, oblong or linear, numerous, crenate or entire, mostly acute, smaller; heads about 3" high, distinctly peduncled, in a terminal simple or branched thyrsus; bracts of the involucre linear-oblong, obtuse, or the inner acutish; achenes striate, pubescent On rocky river-banks, Newfoundland to northern New York, Vermont and Virginia. Described, in our first edition, under the name S. Purshii Porter, which proves to be untenable. July-Sept.
Solidago chrysolepis Fernald, of Quebec, has bright yellow acute involucral bracts.
1911. S. racemosa Gillmani Fernald, Rhodora 10: 91.
Glabrous, except the puberulent inflorescence; stem erect or reclining, rather stout, sometimes 3° long. Lower and basal leaves spatulate or oblanceolate, dentate, 3'-12' long, narrowed into long narrowly margined petioles; upper stem leaves lanceolate to linear-lanceolate, gradually smaller; inflorescence narrowly thyrsoid-paniculate, sometimes 16' long; heads distinctly peduncled, about 4" high; bracts of involucre oblong, scarcely glutinous; rays 6-10, deep yellow, 2" long; achenes sparingly pubescent.
Sandy shores of Lakes Michigan and Superior. Aug.-Sept.
S. sciaphila Steele, Contr. Nat. Herb. 13: 371. 1911.
Glabrous, except the ciliate leaf-margins and pu-berulent inflorescence, 2°-31/4° high, light green. Leaves thin in texture, sparingly faintly veined, the lower spatulate to broadly oblanceolate, obtuse, 3-5' long, narrowed into long petioles, the upper oblong to oblong-lanceolate, sessile, smaller; heads racemose on the slender branches of the narrow thyrsus, on peduncles as long as the involucre or longer; involucre campanulate, about 3" long, its bracts linear-oblong, obtuse; rays about 5, light yellow, short.
Shaded cliffs of the Wisconsin River, Sauk County, Wisconsin. Aug.-Sept.
Solidago sempervirens L. Sp. Pl. 878. 1753. S. angustifolia Ell. Bot. S. C. & Ga. 2: 388. 1824. Not Mill. 1768.
Stem stout, leafy, usually simple, 2°-8° high, glabrous or slightly puberulent above. Leaves thick, fleshy, entire, with 2-5 pairs of lateral veins, the lower and basal ones oblong, spatulate or lanceolate, mostly obtuse, sometimes l° long, narrowed into long petioles; upper leaves sessile, lanceolate to oblong-lanceolate, acute; heads 3"-5" high, in secund racemes of a large terminal often leafy panicle; rays 8-10, showy; bracts of the involucre lanceolate, acute.
On salt marshes, sea-beaches, along tidal rivers and in sandy soil near the sea, Nova Scotia and New Brunswick to Florida and Mexico. Also in Bermuda. Salt-marsh or beach golden-rod. Aug-Dec.