COMPOSITE. 173" 



rer *ide J fads very numerou?, small, with very obscure yellow rays.— Varies 

 greatly in the roughness and hairiness of the stem and leaves, the latter varying 

 to oblong-lanceolate or elongated linear-lanceolate. 



12. S. serotina, Ait. Late-flower in j Golden-rod. 



Stem very smooth, tall and stout, often -gla-uoo us; leaves, lanecolate-, pointed, 

 serrate, roughish, slender, pubescent; rays numerous, short. 



Thickets and lew grounds; common. Sept., Oct. Stum 4 to 8 feet high, terete; 

 sometimes purplish. Leaves 3 to 7 inches long, \A as wide, lower ones slightly" 

 toothed, upper onea entire. Heads numerous, middle-sized, forming a more or less 

 compact panicle inclined at the summit. 



13. S. gigantea, Ait. Gigantic Golden-rod. 



Stem smooth, stout and tall; leaves lanceolate, acuminate, very sharply serrate, 

 smooth on both sides, margin rough, ciliate ; heads in paniculate racemes ; branches 

 pubescent; peduncles and pedicels hairy ; rays rather long. 



Fields and fence rows; common. Aug. — Oct. Stem 4 to 7 feet high, green soma- 

 tomes purplish, somatimes much branched above. Leaves 2 to 7 inches long, Vf$ as 

 vide, acuminate at each end. Heads larger than in the two preceding species. 

 Panicle diiluse on spreading, leafy branches. 



****** Heads in one-sided racemes ; leaves feather-veined, ull entire. 



14. S. SEMPERVIRENS, L.- Eucrgreenor Salt Marsh G.-rod. 



Smooth ; stem stout ; leaves fleshy, lanceolate, cldsely sessile or somewhat clasping ; 

 the radical leaves oval or lanceolate-oblong, obscurely triple-nerved ; heads iu erect 

 racemos 3 panicles ; rays 8 to 10, elongated. 



Salt marshes and river banks near the w-ater, Sept. Stem 2 to 8 feet high, pur- 

 plish, somewhat glaucous, with numerous long and harrow leaves. Head* showy, 

 with golden yellow rays. 



15. S. odora, Sweet-scented Golden-rod. 



Smooth; radical and lower stem-leaves elliptical or lance-ova! ; leaves linear-lanceo- 

 late, entire, smooth, pellucid-dotted, scabrous on the margin; racemes paniculate 

 onesided. 



Borders of thickets, sunny hills and fertile woodland. July— Sept. Stem 2 to 3 

 feet high, yellowish green, with lines of pubescence from the base of the leaves. 

 Leaves 2 to 3 inches long, ^ to % wide. Heads middle-sized, in one-sided racemes, 

 forming a terminal pyramidal panicle. Rays 2 to 4, oblong, large. The leaves and 

 flowers when dried form an excellent substitute for tea. The leaves are aromatic, 

 aud yield by distillation a fragrant volatile oil. 



******* Heads in one-sided racrmes; leaves feather-veined, the lower oiks toothed. 



16. S. PATTJLA, Muhl. Spreading Golden-rod. 



Stem smooth, strongly angled ; leaves ovate, acute, serrate, very smooth and veiny, 

 underneath, upper surface very rough ; racemes paniculate, spreading. 



Swamps ; common. Aug., Sept.- Stem 2 to 5 feet high, often purple, branched 

 above. Leaves often 6 to 8 inches long, lead-colored; the lower ones oblong-spatu- 

 late, the upper surface remarkably rough. Heads rather large on numerous ra- 

 cemes, on the spreading branches.- Rays 1 to 7, oblong. 



17. S. neglect AjTorr. &. Gray, Neglected Golden-rod. 



Smooth; stem stout; leaves thickish, varying from narrow-lanceolate to ovate- 

 lanceo'ate, tupering to both ends, feather-veined, entire, the lower ones serrate; ra. 

 cemes dense,one-sided, at length spreading, on elongated, slender, sub-erect branches. 



Swamps. Aug., Sept. Stem 2 to 3 feet high, straight, round, dividing at top into 

 several nearly erect branches. Lower leaves 5 to 7 inches long. Heads middle-sized, 

 10 to 20 flowered. Racemes at first erect and scarcely one-sided. 



18. S. ARGUTA, Ait. Sharp-toothed Golden-rod. 

 Smooth; radical and lower stem-leaves eliptical or lance-oval, sharply serrate, with 



z* 



