344 



COMPOSITAE. 



[Vol. III. 



38. Solidago Canadensis L. Canada 

 Golden-rod. (Fig. 3708.) 



Solidai^o Canadensis h- Sp. PI. 878. 1753. 

 Solidago allissima h. loc. cit. 1753. 



Stem stout, puberuleiit, pubescent, or hirsute, a'-S" 

 high. Leaves lanceolate, triple-nerved, acute at each 

 end, the lower ones sharply serrate and petioled, 

 3'-6' long, 4"-i2''' wide, the upper smaller, en- 

 tire, sessile; heads i^^"-2" high, very numerous, 

 secund on the spreading or recurving branches of 

 the usually large and dense panicle; bracts of the 

 involucre linear, obtuse or aculish ; rays 9-15 ; achenes 

 glabrous or somewhat pubescent. 



Usually in dry soil, New Brunswick to tlic Northwest 

 Territory and British Columbia, south to Florida and 

 Arizona. Called also Yellow weed. Aug. -Nov. 

 Solidago Canadensis procera (.\it. ) T. & G. Fl. N. aT2;~ 

 224. 1841. 

 ■S. procera Ait. Hort. Kew. 3: 211. 1789. 



Leaves less serrate, sometimes all entire, cinereous- 

 pubescent with short appressed hairs. With the type. 

 Solidago Canadensis glabrata Porter, Bull. Torr. Club, 21: 310. 1894. 

 Stems 2°-4° higli, glabrous or nearly so below, puberulent above; leaves narrowly lanceolate, 

 smooth above, pubescent on the veins beneath; panicles and heads smaller than in the type. 

 Maine to northern New York and Pennsylvania. 



SoUdago Canadensis scabriuscula Porter, Mem. Torr. Club, 5: 318. 1894. 

 Solidago Canadensis \-a.r. seahra T. ix.G.V\. 'H. \. ■2: 22\. 1841. Not .S. jcnira Willd. 1804. 



Leaves shorter, sparingly .serrate or entire, rough above, rugose beneath; heads mostly larger 

 than in the type. New York and Pennsylvania to Florida and Te.\as. 



Solidago Canadensis gilvoscanescens Rydberg, Contr. Nat. Herb. 3: 162. 1895. 

 A foot high, or less, leafy, canescent, yellowish; leaves remotely serrate above the middle, or 

 entire; inflorescence dense; heads smaller than in the type. Minnesota to Montana and Kansas. 



39. Solidago nemoralis Ait. Graj' or Field 

 Golden-rod. Dyer's Weed. (Fig. 3709. ) 



Solidago nemoralis Ait. Hort. Kew. 3: 213. 1789. 



Slender, ashy-gray, 6'-2° high, finely and densely 

 pubescent. Leaves thick, roughish, the basal and 

 the lower stem leaves oblanceolate or spatulate, 

 petioled, obscurely triple-nerved, obtuse or acutish, 

 crenate-dentate, s'-G' long, 4"-! 2" wide; upper 

 leaves gradually smaller, oblanceolate or linear-ob- 

 long, acute or acutish, entire; heads i"--^" high, 

 secund on the spreading or recurving branches of 

 the terminal, usually one-sided panicle; bracts of the 

 involucre linear-oblong; rays 5-9; achenes pubescent. 



In dry soil, Quebec to the Northwest Territory, Flor- 

 ida, Texas and Arizona. July-Nov. 



Solidago nemoralis arenicola Burgess 



Depressed, or prostrate, about 6' high; inflorescence 

 dense, flattened, composing most of tire plant. Sand 

 hills, Cape Cod to Long Island. 



40. Solidago mollis Bartl. Velvety 

 Golden-rod. (Fig. 3710.) 



Solidago mollis Bartl. Ind. Seni. Goett. 5. 1836. 

 Solidago incana T. & G. Fl. N. A. 2: 221. 1841. 

 Solidago nemoralis var. incana A. Gray, Proc. Am. .^cad. 



17: 197. 1882. 



Stem rigid, stout, low, canescent or slightly scabrous, 

 6'-i2' high. Leaves pale, canescent or rough, entire 

 or dentate, strongly 3-nerved, oblong, ovate or oblan- 

 ceolate, the lower petioled, 2'-3' long, 3"-! 2" wide, 

 very obtuse, the upper sessile, smaller; heads 2"-3" 

 high, somewhat or scarcely secund on the short 

 branches of the erect, not one-sided, dense thyrsoid 

 panicle; bracts of the involucre oblong, obtuse or 

 acutish; rays 5-9; achenes pubescent. 



Dry plains, Minnesota to the Northwest Territorj". south 

 to Texas and Mexico. July-Sept. 



