Genus 22.] 



THISTLE FAMILY. 



345 



41. Solidago Radula Nutt. Western 

 Rough Golden-rod. (Fig. 3711.) 



Solidago Radula Nutt. Journ. Acad. PUila. 7: 102. 1S34. 



Stem rough-pubescent, rather slender, i°-3° high. 

 Leaves thick, green, rough on both sides, the lower 

 oblanceolate orspatulatc, dentate-creuate, obtuse or 

 acutish, petioled, 3'-S' long, 6"- 20" wide, obscurely 

 3-nerved, the upper smaller, oblanceolate, entire or 

 nearly so, sessile, distinctly 3-nerved, the upper- 

 most very small; heads 2"-^" high, secund on the 

 short, usually somewhat recurved branches of the 

 dense, often onesided panicle; bracts of the invo- 

 lucre oblong or linear-oblong, obtuse; rays 3-7, 

 very short; achenes minutely pubescent. 



In dry soil. Illinois to Missouri, Louisiana and 

 Texas. .'\iig.-Sept. 



43. Solidago rigida L. Stiff or 

 Hard-leaved Golden-rod. (Fig. 3713.) 



Solidago rigida L- Sp. PI. S80. 1753. 



Stem stout, simple, or branched above, 

 densely and finely rough-pubescent, hoary, i°- 

 5° high. Leaves thick, rigid, ovate to oblong, 

 pinnately veined, often obtuse.rough on both 

 sides, the upper sessile, clasping, and rounded 

 or sometimes narrowed at the base, i'-2' 

 long, mostly entire ; lower and basal leaves 

 long-petioled, sometimes 1° long and 3' wide, 

 entire or serrulate; heads 4'''-5" high, many- 

 flowered, in a terminal dense corymbose 

 cyme, the clusters sometimes slightly secund; 

 involucre broadly campanulate, its bracts ob- 

 long, obtuse, the outer pubescent; rays 6-10, 

 large; achenes glabrous, io-15-nerved. 



In dry sandy, gravelly or rocky soil, Ontario 

 to the Northwest Territory, south to Georgia, 

 Texas and Colorado. Aug.-Oct. 



42. Solidago Drummondii T. & G. 



Drummond's Golden-rod. (Fig. 3712.) 



Solidago D>-umniondii T. & G. Fl. N. A. 2; 217. 



1841. 



Stem rather slender, i°-3° high, finely soft- 

 pubescent. Leaves rather thin, broadly ovate 

 or oval, glabrous or nearly so above, finely, 

 but sometimes sparingly pubescent, or rough- 

 ish beneath, sharply serrate, acute at the 

 apex, narrowed at the base, 3-nerved and pin- 

 nately veined, petioled, or the upper sessile, 

 the larger 3'-4' long, i^'-a' wide; heads 2"- 

 2^" bigh, secund on the usually few, spread- 

 ing or recurving branches of the panicle ; bract- 

 like upper leaves obtuse, or acute, entire; rays 

 4-6, conspicuous ; bracts of the involucre ob- 

 long-lanceolate, obtuse; achenes pubescent. 



In rocky soil, Illinois to Louisiana and Mis- 

 souri. Sept. -Oct. 



