210 COMPOSITE, (composite family.) 



Var. pulverulenta. Upper leaves shorter, oblong-obovate ; scales of the 

 (20 -25-flowered) involucre linear-lanceolate; achenia smooth. (S pulveru- 

 lenta, Ntitt.) — Damp pine barrens, Florida to North Carolina. Sept. and Oct. 

 — Stem 2° - 4° high, often purplish. Lowest leaves 2' - 4' long. Flowers middle 

 sized, bright j-ellow. 



12. S. petiolaris, Ait. Minutely pubescent ; stem mostly simple, straight, 

 very leafy; leaves oblong-lanceolate or elliptical, acute, rough on the margins, 

 all but the lowest entire, and nearly sessile ; panicle racemose or oblong ; heads 

 large, 20 - 25-flowered ; rays about 10, showy; scales of the involucre linear, 

 pubescent ; the outer ones more or less spreading ; achenia snioothish. (S. elata? 

 Ell ) — Dry sandy soil, Florida to North Carolina. Sept. — Stem 2° -3° high. 

 Leaves l'-2' long. 



13. S. speciosa, Nutt. Stem stout, mostly simple, smooth below, pubes- 

 cent above ; leaves smooth, the lowest large (5'- 8' long, H'- 2' wide), serrate ; 

 the u])per ones lanceolate ; panicle compact, pyramidal ; heads rather large, 

 crowded, 15 - 20-flowered; rays 6-8, showy; scales of the involucre lanceolate, 

 obtuse ; achenia smooth. — Varies, with the stem and lower surface of the 

 broader (2' -3') leaves villous; the fewer, larger, and more scattered heads 

 about 30-flowered (S. petiolaris. Ell. ?) ; or every way smaller ; the short racemes 

 forming a narrow racemose panicle (S. erecta, Ell.). — Dry soil, Florida to Mis- 

 sissippi, and northward ; the first variety only in the upper districts. Sept. and 

 Oct. — Stem 3° - 5° high, often purplish. 



14. S. verna, Curtis. Closely pubescent and somewhat hoary; stem sim- 

 ple, or panick'd above ; leaves tliin, roughish, the lowest oblong, abruptly nar- 

 rowed into a long and slender petiole, the upper ones sessile and entire ; racemes 

 verj- slender, spreading, forming an open somewhat corymbose panicle; heads 

 rather large, scattered, about 30-floAvered ; rays narrow ; scales of the involucre 

 linear ; achenia pubescent. — Pine barrens, near AVilmington, North Carolina, 

 Curtis. May and June. — Stem 2° - 3° high. Lowest leaves 3' - 5' long. 



15. S. glomerata, Michx. Smooth; stem stout, simple; leaves large, 

 oblong-lanceolate, acuminate at each end, sharply serrate, the lowest tapering 

 into a petiole ; racemes cluster-like, much shorter than tlio leaves ; the upper 

 ones approximate and racemose; heads very large, 30- 40-flowered ; rays 10- 

 12; scales of tlie involucre acute, smooth ; achenia pubescent. -«- Higii moun- 

 tains of North Carolina. Sept. — Stem 1° - 2° high. Leaves 4' - y' long. 



-t- -I- -1- Racemes corymbose. 



16. S. rigida, L. Rough-pubescent and somewhat hoary; stem stout; 

 leaves rigid, oval or oblong, serrate, sessile ; the lowest narrowed into a petiole ; 

 corj-mb compact ; heads very large, 30-35-flowered ; rays 7 - 10 ; scales of the 

 involucre oblong, obtuse ; achenia smooth. — Mountains of Georgia and nortli- 

 ward. Sept. — Stem 3° - 4° high. Lowest leaves 6' - 9' long. 



17. S. COrymbosa, Ell. Stem erect, smooth ; the branches rough-haiiy ; 

 lower leaves oblong-lanceolate, the upper ovate ; all fleshy, rigid, smooth, but 

 very rough and fringed along the margin ; racemes corymbose, the lower re- 

 curved ; rays long. — Middle districts of Georgia. Sept. and Oct. — Stem stout. 



