176 COMPOSITE. 



ft 



petioles ; cauline elliptic-lanceolate, strongly acuminate, tapering at base ; 

 uppermost somewhat entire ; racemes pubescent, disposed in an elongated 

 open panicle. S. arguta Muhl. not of Ait. 



Low grounds. Mass, to Penn. Aug., Sept. 1]-. Stem 23 feet high, simple 

 or virgately branched. Heads rather large, on short racemes, forming a some- 

 what slender panicle ; rays 5 7, spatulate-oblong, large. 



Muhleriberg's Golden-rod. 



8. S. nemoralis Ait : stem tomentose, simple or branched above ; radical 

 leaves somewhat cuneate, crenate-serrate, narrowed at base into a petiole ; 

 cauline oblanceolate, nearly entire, roughish-pubescent; racemes secund > 

 paniculate. >S". hispida Muhl. 



Sandy fields. Can. and throughout the U, S. Aug. Oct. %. Stem 12 

 feet high, often much branched at the summit. Heads middle-sized, in a small 

 and somewhat corymbose panicle; rays spatulate-oblong, rather short. The 

 whole plant has a grayish or pulverulent appearance. 



Woolly-stalked Golden-rod. 



9. S. puberula Nutt. : minutely puberulent ; stem simple ; leaves lanceo- 

 late, entire, attenuated at each end ; radical subserrate ; racemes spiked, 

 axillary, erect, spreading, forming an elongated panicle ; scales of the in- 

 volucre linear, subulate, appressed; rays about 10, elongated. 



Sandy woods. Maine to Geor. VJ.. Stem 2 4 feet high, often purplish. 

 Racemes shorter than the lower leaves, collected into a leafy spike : rays bright 

 yellow. Resembles the preceding, but differs in its leaves and flowers. 



Puberuknt Golden-rod. 



10. S. patida Muhl. : stem erect, striate, smooth ; leaves elliptic, serrate, 

 smooth beneath, rough above ; the radical oblong-spatulate ; racemes secund, 

 paniculate, spreading ; peduncles pubescent. 



Wet meadows. Can. to Flor. W. to Miss. Aug., Sept. 7J.. , Stem 24 feet 

 high, somewhat angular, often purple, branched at the top. Leaves large. 

 Heads rather large. Panicle sometimes contracted. Rays 6 7, oblong. 



Spreading Golden-rod. 



11. S 1 . neglccta Torr. cf- Gr. : stem smooth, striate; leaves mostly thick- 

 ish, smooth ; lower oblong or ovate-lanceolate, sessile, mostly acute at 

 each end, finely serrate, upper entire ; racemes short, dense, secund, some- 

 what spreading, forming an elongated leafy panicle ; peduncles smoothish. 



Swamps. Mass. N. Y. to Car. W. to Ind. Aug., Sept. Ij.. Stem 36 feet 

 high, stout. Heads middle-sized, in racemes which are at length spreading ; 

 rays 4 5, rather large. Neglected Golden-rod. 



12. S. ulmifolia W'dld. : stem erect, smooth, striate ; leaves elliptic-lan- 

 ceolate, deeply serrate, acuminate, tapering at base, villous beneath ; radi- 

 cal obovate ; racemes paniculate, secund ; peduncles villous ; rays short. 



Shady woods. N. S. Aug. Oct. %.. Stem 3 4 feet high, often with long 

 slender branches at the summit. Heads in racemes which are often slender and 

 usually recurved ; rays about 4, small. The name is inappropriate. 



Elm-leaved Golden-rod. 



13. >S". ettiplica Ait. : stem erect, glabrous ; leaves elliptic, smooth, serrate ; 

 racemes paniculate, secund ; peduncles and pedicels minutely pubescent ; 

 scales of the involucre narrow, acute ; achenia strigose-pubescent. (Torr 



