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..
Solidago Curtisii T. & G. Fl. N. A. 2: 200. 1841.
Stem glabrous or sparingly pubescent, simple or branched, slender, 1 1/2°-3° high, angled and grooved. Leaves thin, sessile, elongated-lanceolate or sometimes broader above the middle, long-acuminate, narrowed below into an entire base, sharply serrate, 3'-6' long, 4"-12" wide, glabrous or nearly so; heads 2"-3" high, in rather loose axillary clusters and sometimes also in a narrow terminal thyrsus; bracts of the involucre few, obtuse.
In mountain woods, Virginia and West Virginia to Kentucky and Georgia. Aug.-Sept.
Solidago pubens M. A. Curtis, of nearly the same range, differs in being quite densely pubescent.
Solidago bicolor L. Mant. 114. 1767.
Stem rather stout, hirsute-pubescent, or nearly glabrous, 6'-4° high, simple or branched. Basal and lower leaves obo-vate or broadly oblong, mostly obtuse, 2'-4' long, 1'-2' wide, narrowed into long margined petioles, dentate or cre-nate-dentate, more or less pubescent; upper leaves smaller and narrower, oblong or sometimes lanceolate, obtusish or acute, sessile or nearly so, often entire; heads 2"-3," high, crowded in a terminal narrow thyrsus 2'-7' long, and sometimes also clustered in the upper axils; rays white; bracts of the involucre whitish, obtuse, the midvein broadened above; achenes glabrous.
In dry soil, Prince Edward Island to Georgia, west to Ontario, Minnesota and Tennessee. Ascends to 6300 ft. in North Carolina. Belly-ache-weed. Silver-weed. July-Sept.
103. 1834. Solidago bicolor concolor T. & G. Fl. N. A. 2:
Stout, stem densely pubescent or hirsute, simple or sometimes branched, 1 1/2°-3° high. Lower leaves oval, acute, or obtuse, peti-oled, pubescent on both sides, usually den-.tate, 2'-5' long, 1'-2' wide; upper leaves oblong, sessile, acute, dentate or entire, smaller, sessile, heads about 3" high, crowded in a dense narrow terminal thyrsus and also often in racemose clusters in the upper axils; rays yellow; involucral bracts yellowish, obtuse, the midvein narrow; achenes with a few appressed hairs, or glabrous.
In dry soil, Newfoundland to western Ontario, Manitoba, New Jersey, Pennsylvania, Georgia and Missouri. Ascends to 2000 ft. in the Catskills. Aug.-Oct.
Solidago erecta Pursh, Fl. Am. Sept. 542.
1814. Solidago speciosa angustata T. & G. Fl. N. A. 2: 205. 1841.
Stem slender, glabrous, or puberulent above, 2°-3° high, simple or rarely branched. Leaves firm, nearly glabrous on both sides, ciliolate on the margins, the lower and basal ones broadly oblong or oval, obtuse or obtusish, crenate-dentate, the upper lanceolate or oblong-lanceolate, acute, usually quite entire; heads 2"-3" high in a very narrow terminal thyrsus, rarely also with a few clustered in the upper axils; bracts of the involucre obtuse; rays light yellow; achenes glabrous.
In dry soil, southeastern New York, New Jersey and Pennsylvania to Kentucky, Georgia and Alabama. Aug.-Sept.