176 COMPOSITE. 



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

 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 2 — 3 feet high, simple 

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

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



Muhlenberg's Golden-rod. 



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

 leaves somewhat cune^e, 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 1—2 

 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, erec;t, spreading, forming an elongated panicle ; scales of the in- 

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



Sandy woods. Maine to Geor. 'l\..—Stem 3—4 feet high, often purphsh. 

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

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



Puberulent Golden-rod. 



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

 smooth beneath, roucni above; the radical ohlong-spatulatc ; racemes secund, 

 paniculate, spreading ; peduncles pubescent. 



Wet meadows. Can. to Flor. W. to Miss. Aug., Sept. %. — Stem 2 — 4 feet 

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

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



Spreading Golden-rod. 



11. (S. neglecta Torr. <(• 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. %.—Stem 3— 6 feet 

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

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



12. S". ulmifolia Willd. : 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. %.—StemZ — 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 mappropriate. 



Elm-leaved Golden-rod. 



13. S. ellipiica 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 

 <^ Gr.) 



