COMPOSIT.E. (COMPOSITK FAMILY.) 253 



12. H. tomentOSUS, Miclix. Stem stout, hirsute, braucliing; leaves all 

 alternate, or the lowest opposite, very rough above, tomentose beneath, slightly 

 sei'rate ; the lowest large (6' - 12'), ovate, on short winged petioles ; the upper 

 ones oblong ; heads large ; scales of the involucre numerous, lanceolate, 

 acuminate, villous, spreading; rays 15-20. — Open woods, and margins of 

 fields, Florida to North Carolina. Sept. — Stem 4° -8° high. Kays I'-l^' 

 long. 



13. H. tuberosus, L. Stem tall, branched, smooth below, hirsute above; 

 leaves opposite, ovate or ovate-lanceolate, acuminate, serrate, rough above, 

 pubescent beneath ; the lower often slightly cordate, on short winged petioles- 

 scales of the involucre linear-lanceolate, hirsute, about as long as the disk ; 

 rays 12-15. — Rich soil in the upper districts. Sept. — Stem 5° -8° high. 

 Lowest leaves 6'- 12' long. Heads large. Kays 1^' long. 



14. H. strumosus, L. Stem simple or branched, I'ough above ; leaves 

 lanceolate or ovate lanceolate, acuminate, slightly serrate, short-petioled, very- 

 rough above, paler and smooth, or sometimes softly pube.sceut beneath ; 

 scales of the involucre lanceolate, acuminate, as long as the disl<, spreading ; 

 rays 8-10. — Dry soil, common. Sept. — Stem 2° - 4° high, sometimes glau- 

 cous. Leaves 3' -4' long. 



15. H. decapetalus, L. Stem branched, smooth below, rough above ; 

 leaves thin, opposite, ovate, acuminate, coarsely serrate, rough on the upper 

 surface, smooth or roughish beneath, abruptly short-petioled ; scales of the 

 involucre lanceolate-linear, spreading; the exterior longer than the disk ; 

 rays 8- 10. — Mountains of Georgia, and northward. Sept. — Stem 2° -5° 

 high. Leaves 3'- 6' long. 



16. H. hirsutus, Raf. Stem hirsute, simple or forking at the summit; 

 leaves opposite, short-petioled, tapering from the broad and rounded, some- 

 times slightly cordate base, acuminate, serrate, very rough above, paler and 

 rougli-hairy beneath ; scales of the involucre ovate-lanceolate, acuminate, ap- 

 pressed, as long as the disk ; rays about 12. — Dry soil in the upper districts. 

 Sept. — Stem 2*^ - 5° high. Leaves 3' - 5' long. 



17. H. divarieatUS, L. Stem smooth, simple, or corymbosely branched 

 at the summit ; leaves opposite, sessile, ovate lanceolate, serrate, rounded or 

 truncate at the base, very rough above, smootli or rough-puliesceiit l)eneath ; 

 heads few, on short peduncles ; scales of the involucre lanceolate or linear- 

 lanceolate, spreading, as long as the disk ; rays 8- 12. — Dry woods. Sept. 

 — Stem 2°- 3° high,, Leaves 3' - 5' long. 



18. H. undulatus, Chapm. Perennial; stem scabrous, 3° -5° high; 

 leaves linear-lanceolate, sessile and mostly dilated at the base, undulate, the 

 margins revolute, very scabrous above, pubescent beneath, 3' -5' long; in- 

 volucre pubescent; rays 12-18, I'long; achenia margined. (H. angusti- 

 folius, var., 1st edit. H. Floridanus, Graij, in part.) — Marshes near the 

 coast, West Florida. Sept. - Nov. 



* * * * Perevnial : dish yellow : heads small : leaves narrnii: 



19. H. parviflorus, Bernh. Stem smooth, much branched ; leaves op- 

 posite, or the upper ones alternate, lanceolate or ovate-lanceolate, acute. 



