210 COMPOSITE, (composite family.) 



Var. pulverulenta. Upper leaves shorter, oblon<5-ol)ovntc ; scales of the 

 (20 -2r)-tl()\vcre(l) iiivulucre linear-lanceolate; aehenia sniootii. (S- pulveru- 

 lenta, Aul/.) — Damp pine barrens, Florida to North Carolhia. Sept. and Oet. 

 — Stem 2° - 4° liigli, 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-lancoolate or elliptical, acute, rough on tlie margins, 

 all but the lowest entire, and nearly sessile ; panicle racemose or ol)long ; heads 

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

 pubescent; theouter ones more or less spreading ; aclieniasmoothish. (S.elatn? 

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

 Leaves 1 ' - 2' lung. 



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

 cent above; leaves smooth, the lowest large (o'-S' long, l^'-2' wide), serrate; 

 tiie upper ones lanceolate ; panicle compact, pyramidal ; heads rather large, 

 crowded, 1.5 - 20-flowcred; rays 6-8, showy; scales of the involucre lanceolate, 

 obtuse; aehenia 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 panieled 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 ; scales of the involucre 

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

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



1^. 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 upper 

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

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

 tains of North Carolina. Sept. — Stem 1^-2° high. Leaves 4' - 9' long. 



-(--(- -1- Racemes corijmbose. 



10. S. rigida, L. Eough-pubcscent and somewhat hoary; stem stout; 

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

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

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

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



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

 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. 



