230 COMPOSITE. (composite family.) 



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

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

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

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



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

 high. Heads showy. 



# # # Perennial: disk yellow, heads large or middle-sized. 



8. H. laetiflorus, Pers. Stem stout, rough, branching ; leaves 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, ciliate, appressed ; chaff of the 

 receptacle somewhat 3-toothed or entire ; rays 12 - 1G, elongated. (II. tricuspis, 

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

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

 high. Leaves 5' -8' long. Kays H' long. 



9. H. occidentalis, Riddell, var. Dowellianus, Torr. & Gray. Nearly 

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

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

 ones opposite, large, broadly ovate, subcordatc, obtuse ; the upper alternate, ob- 

 long-ovate ; 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, 5'- 6' wide. Kays I' long. 



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

 mostly simple; leaves ovate or oblong-ovate, acute, slightly serrate, 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, Ell.) — Dry open woods in the upper districts of Georgia, and 

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



11. H. giganteus, L. Stem hirsute, rough, branching above ; leaves 

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



beneath, slightly 3-nerved at the base, all but the lowest ones alternate ; scales of 

 the involucre linear-lanceolate, spreading, hirsute J 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 ones opposite, very rough above, tomentosc beneath, 



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



upper ones oblong ; head- lavge; scales of the involucre numerous, lanceolate, 



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

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

 gins of fields, Florida to North Carolina. Sept. — Stem 4°-S° high. Lavs 



r-iyiong. 



13. II. doronicoides, Lam. Stem tall, branched, smooth below, hirsute 

 abovo ; leaves opposite, ovate or ovate-lanceolpte, acuminate, serrate, rough 



