. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus 22. THISTLE FAMILY. 397 46. Solidago rigida L. Stiff or Hard- leaved Golden-rod. Fig. 4258. Solidago rigida L. Sp. PI. 880. 1753. Oligoneuron canescens Rydb. Bull. Torr. Club 31: 652. 1905. Stem stout, simple, or branched above, densely and finely rough-pubescent, hoary, i°- 5° high. Leaves thick, flat, rigid, ovate to oblong, pinnately veined, often obtu
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus 22. THISTLE FAMILY. 397 46. Solidago rigida L. Stiff or Hard- leaved Golden-rod. Fig. 4258. Solidago rigida L. Sp. PI. 880. 1753. Oligoneuron canescens Rydb. Bull. Torr. Club 31: 652. 1905. Stem stout, simple, or branched above, densely and finely rough-pubescent, hoary, i°- 5° high. Leaves thick, flat, rigid, ovate to oblong, pinnately veined, often obtuse, rough on both sides, or smoothish beneath, the upper sessile, clasping, and rounded or sometimes narrowed at the base, 1'-2'long, mostly entire; lower and basal leaves long-petioled, some- times i° long and 3' wide, entire or serrulate; heads 4"-S" high, many-flowered, in a terminal dense, compound corymb, the clusters some- times slightly secund; involucre broadly cam- panulate, its bracts oblong, obtuse, the outer pubescent; rays 6-10, large; achenes glabrous, 10-15-nerved. In dry sandy, gravelly or rocky soil, Ontario to Saskatchewan, Massachusetts, Georgia, Texas and Colorado. Solidago corymbosa Ell., of the Southern States, differing by being less rough and with slightly smaller heads, probably a race of this species, ranges north into 48. Solidago Riddellii Frank. Riddell's Golden-rod. Fig. 4260. Solidago Riddellii Frank; Riddell, Syn. Fl. West. States 57. 1835. Stem stout, glabrous, or slightly pubescent above, i°-3° high. Leaves numerous, thick, glabrous on both sides, entire, acute at each end, the lower and basal ones long-petioled, elongated, lanecolate, somewhat triple-nerved and conduplicate, often i° long, 4"-io" wide, the upper smaller, similar, sessile and clasping at the base, conduplicate, somewhat falcate; heads 3"-4" high, 20-30-flowered, very numer- ous in a dense corymb; involucre oblong-cam- panulat
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
