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, Nuit.) — l)aiiij« pine barrens, Florida to North Carolina. Sept. and Oct. 

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

 sized, bright yellow. 



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 entile, 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 smoothish. (S.elatal 

 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, l|'-2' wide), senate ; 

 the upper 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 panicled above; leaves thin, roughish, the lowest oblong, abruptly nar- 

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

 very slender, spreading, forming an open somewhat corymbose panicle; heads 

 rather large, scattered, about 30-flowered; rays narrow ; scab's of the involucre 

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

 ( 'urtis. 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 the leaves; the npper 

 ones approximate and racemose; beads very large, 80- 40-flowered; rays w 

 12 ; scales of the involucre acute, smooth ; achenia pubescent. — High moun- 

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



+- -i- +- Racemes corymbose. 

 n>. S. rigida, L. Rough-pubescent and somewhat hoary : stem stout ; 

 leave, rigid, oval *• oblong, Berratc, Bessile ; the lowest nan-owed into a petiole ; 



corymb compart ; heads very large, 3D -35-flowepd ; ray- 7 - 1(1 ; scabs of the 



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

 ward. Sept — Stem 8° -4° high. Lowesl leaves 6' -9' long. 



17. S. corymbosa, Ell. Stem erect, smooth ; the branches rough-hairy ; 

 lov r l':r., oblong-lanceolate, the upper ovate; all fleshy, rigid, smooth, but 

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

 curved : rays Ion-. — Middle districts of G< orgia Bcpt and ' >ct — Stem -ton;, 



