GENUS 22. 



THISTLE FAMILY 



1 6. Solidago uliginosa Nutt. Bog or 

 Swamp Golden-rod. Fig. 4228. 



Solidago uliginosa Nutt. Journ. Phil. Acad. 7: 101. 

 1834- 



Stem glabrous, rather stout, simple, 2-4 

 high, the branches of the inflorescence more 

 or less pubescent. Leaves oblong-lanceolate or 

 lanceolate, glabrous, firm, more or less cilio- 

 late or scabrous on the margins, few-veined, 

 acute or acuminate, the lower and basal ones 

 4'-o/ long, J'-li' wide, more or less serrate and 

 narrowed into petioles, the upper smaller, 

 mostly sessile and entire; heads 2" -2" high, in 

 a terminal oblong dense thyrsus, its branches 

 appressed ; bracts of the involucre linear-ob- 

 long, obtuse ; achenes glabrous. 



In swamps and bogs, Newfoundland to New 

 Jersey, North Carolina, western Ontario, Minne- 

 sota and Wisconsin. Aug.-Sept. 



17. Solidago speciosa Nutt. Showy or 



Noble Golden-rod. Fig. 4229. 

 Solidago speciosa Nutt. Gen. 2: 160. 1818. 



Stem stout, glabrous below, often rough 

 above, usually simple,- 3-7 high. Leaves 

 glabrous, firm, the lower and basal ovate, or 

 broadly oval, 4'-io' long, i'-4' wide, dentate 

 or crenate, pinnately veined, acute or obtuse 

 at the apex, long-petioled ; upper leaves 

 smaller, oblong or oval, acute at each end, 

 crenate-dentate, or entire, sessile or short- 

 petioled, rough-margined ; heads 3"-4" high, 

 in a large terminal thyrsus, the branches of 

 which are ascending and often leafy; bracts 

 of the involucre oblong, very obtuse; achenes 

 glabrous or nearly so. 



In rich soil, Massachusetts to North Carolina, 

 west to Minnesota, Tennessee and Arkansas. Ap- 

 parently erroneously recorded from Canada and 

 Nova Scotia. Aug.-Oct. 



18. Solidago rigidiuscula (T. & G.) 

 Porter. Slender Showy Golden- 

 rod. Fig. 4230. 



Solidago speciosa rigidiuscula T. & G. Fl. N. A. 



2 : 205. 1841. 

 Solidago speciosa pallida Porter, Bull. Torr. 



Club 19 : 130. 1892. 

 Solidago rigidiuscula Porter, Mem. Torr. Club 



5: 319. 1894. 

 S. pallida Rydb. Bull. Torr. Club 33 : 1 53. 1906. 



Stem rather slender, usually glabrous be- 

 low, rough-pubescent above, simple, 2-4 

 high. Leaves lanceolate to ovate-lanceo- 

 late, entire, or the basal ones sometimes 

 crenate, strongly ciliolate on the margins, 

 I '-5' long, 3"-! 2" wide, the upper sessile, 

 the lower sometimes narrowed into peti- 

 oles ; heads similar to those of the pre- 

 ceding species; thyrsus generally narrow, 

 dense, simple or branched. 



In dry soil, mostly on prairies, Ohio to Ala- 

 bama, Ontario, Minnesota, Colorado, Louisi- 

 ana and Texas. Aug.-Oct. 



