GENUS 22. 



THISTLE FAMILY 



4. Solidago flexicaulis L. Zig-zag or 

 Broad-leaved Golden-rod. Fig. 4216. 



Solidago fle.vicaulis L. Sp. PI. 879. 1753. 

 Solidago laifolia L. loc. cit. 1753. 



Stem glabrous, angled, usually simple, zig-zag, 

 i-3 high. Leaves thin, ovate, acuminate at the 

 apex, abruptly narrowed at the base into mar- 

 gined petioles, somewhat pubescent, or glabrous 

 beneath, sharply serrate, 2'-?' long, i'-4' wide, the 

 uppermost sometimes lanceolate and entire or 

 nearly so ; heads about 3" high, in short axillary 

 racemose clusters, and rarely also in a narrow 

 terminal thyrsus; bracts of the involucre obtuse 

 to acutish, appressed; achenes hirsute-pubescent. 



In rich woods, Nova Scotia and New Brunswick to 

 Georgia, Tennessee, Minnesota and Missouri. As- 

 cends to 2300 ft. in the Catskills. July-Sept. 



6. Solidago bicolor L. White or 



Pale Golden-rod. Silver-rod. 



Fig. 4218. 



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, I '-2' wide, narrowed into 

 long margined petioles, dentate or cre- 

 nate-dentate, more or less pubescent; 

 upper leaves smaller and narrower, ob- 

 long or sometimes lanceolate, obtusish 

 or acute, sessile or nearly so, often en- 

 tire; heads 2"-3" high, crowded in a 

 terminal narrow thyrsus 2'-?' long, and 

 sometimes also clustered in the upper 

 axils; rays white; bracts of the invo- 

 lucre whitish, obtuse, the midvein broad- 

 ened 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. 



5. Solidago Curtisii T. & G. Curtis' 

 Golden-rod. Fig. 4217. 



Solidago Curtisii T. & G. Fl. N. A. 2 : 200. 1841. 



Stem glabrous or sparingly pubescent, sim- 

 ple or branched, slender, ii-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"-i2" 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 Vir- 

 ginia to Kentucky and Georgia. Aug.-Sept. 



Solidago pubens M. A. Curtis, of nearly the 

 same range, differs in being quite densely pubes- 

 cent. 



