230 COMPOSITE. (composite family.) 



7. H. rigidus, Desf. Stem leafy, stout, mostly simple, rough ; leaves 

 oblong-lanceolate, slightly serrate or entire, thick and rigid, very rough on hoth 

 sides, narrowed into short connate petioles ; scales of the involucre ovate, acute, 

 appressed; chaff of the receptacle obtnse; rays 20-25, (II. scaberrimns, Ell.) 



— Western districts of Georgia, Elliott, and westward. Sept. — Stem l°-3° 

 high. Heads showy. 



# # * Perennial : disk yellow : heads larye or middle-si zid. 



8. H. laetiflorus, Pers. Stein stout, rough, branching ; haves oval-lance- 

 olate, acuminate, serrate, rigid, very rough on both sides, on short petioles ; the 

 uppermost often alternate ; heads solitary or corymbose, on naked peduncles ; 

 scales of the involucre ovate-lanceolate, acute, filiate, appressed; chaff of the 

 receptacle somewhat 3-toothcd or entire ; rays 12- 16, elongated. (II tricuspis, 

 Ell., with the leaves all nearly entire ; chaff of the receptacle 3-toothcd.) — Dry 

 soil, in the Western districts of Georgia, and westward. Sept. — Stem 3° -4° 

 high. Leaves 5' - 8' long. Kays 1 \' long. 



9. H. OCCidentalis, Riddell, var. DowelliailUS, Torr. & Gray. Nearly 

 smooth; stem branched above; leaves triple-nerved, rather thick, slightly den- 

 tate, mi margined petioles, and with a short scattered pubescence ; the lowest 

 ones opposite, large, broadly ovate, subcordate, obtuse ; the upper alternate, ol>- 

 long-ovatc ; peduncles long and slender; scales of the involucre lanceolate, acu- 

 minate, slightly ciliate, shorter than the disk, appressed ; rays 12 -15. — Macon 

 County, North Carolina, Curtis. Aug. and Sept. — Stem 4° - 5° high. Lower 

 leaves 7'- 8' long, ">'- 6' wide. Kays l' long. 



10. H. mollis, Lam. Villous or tomentose and somewhat hoary; stem 

 mostly simple ; leaves ovate or oblong-ovate, acute, .slightly senate, cordate and 

 clasping ; the upper ones often alternate ; heads few, on short peduncles ; scales 

 of the involucre lanceolate, acute ; chaff of the receptacle entire ; rays 15-25. 

 (II. pubescens, l-'.ll.) — Dry open woods in the upper districts of Georgia, and 

 westward. Sept. — Stem 2° -3° high. Leaves 2' -3' long. Beads thick. 



11. H. giganteUS, L. Stem hirsute, rough, blanching above; leaves 

 lanceolate, acuminate, serrate, nearly sessile, rough above, paler and rough-hairy 



beneath, slightly .'i-nerved at the base, all but the lowest ones alternate : Bcalesof 



the involucre linear lanceolate, spreading, hirsute; rays 15-20. — Low ground 

 in the upper districts, and northward. Sept. — Stem 3° - 10° high. Leaves 2' -5' 

 long, [lays 1' long. 



12. H. tomentosus, Michx. Stem stout, hirsute, branching ; leaves all 

 alternate, or the lowest <mes opposite, very rough above, tomentose beneath, 

 slightly serrate ; the lowest largo (6'- 12'), ovate, on Bhort winged petioles; the 



Upper ones Oblong J heads large; Bcalesofthe involucre numerous, lanceolate, 



acuminate, villous, spreading; rays 15-20. (II. spathulatus, Ell., with the 

 leaves all opposite, scales of the involucre shorter.) — Open woods, and mar* 



Of fields, Florida to North Carolina. Sept. — Stem 4° -8° high. Raj s 



l'-l$'long. 



13. II. doronicoides, I, am. Stem tall, branched, smooth, below, hirsute 



above j haves opposite, ovate or ovate lanceolate, acuminate, senate, rough 



