'JoJ COMPOSITJE. (COMI-OMTK FAMILY.) 



5. H. heterophyllus, Nntt. Hirsute <»r liispiil ; .stem slender, mostly 

 siiii)ili', naked iil)()ve; lejives ojipitsite, thick, entire ; tiie lower liiiueolate <jr 

 oldtui;^ ; tlie others linear, remote ; scales of the involucre lanceolate, acumi- 

 nate, ciiiate; chaff of the recej)tacle ."Moothed, tlie middle tooth cusj)idate ; 

 ravs 15-20, elongated. — I'iiic liarren swamps, Florida to North Carolina, 

 and westwanl. JSept. - Oct. — Stem 2° - 4° high. J.,owest leaves 2' - 6' long. 

 Ka\ s 1 V long. 



<j. H. atrorubens, L. Hirsute or hispid ; stem sparingly branclKd and 

 somewliat naked above; leaves opj^site, oval, serrate, the lowest large and 

 long-petioled ; the upper small, sessile, distant ; scJiles of the involucre oval 

 or olilong, oluuse ; eliail of the recejjtacle " acute ; rays about 12; achenia 

 pubescent at tlie apex. — Dry soil, Florida to North Carolina. Sept. -Oct. — 

 Stem 2*^-5° liigh. Lowest leaves 4'-G' lung. Heads rather small. 



7. H. rigidus, Desf. 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, apjiressed ; chaff of ti>e receptacle obtuse; rays 20-25. (II. scaber- 

 rinius, Jill.) — Western districts of Georgia {Elliott), and westward. Sejit. — 

 Stem l^-a*^ lii^j^flleads showy. 



* * Jt^fffimial : disk yellow : heads lanje or middle-sized. 



8. H. Isetiflorus, Pers. Stem etout, rough, branching; leaves oval- 

 lanceulaiv, acuminate, serrate, rigid, very rougii on both sides, on short peti- 

 oles ; U^ds solitary or corymbose ; scales of the involucre ovate-lanceolate, 

 acute, iJciliate, appressed ; chaff of the recejitacle somewhat 3-toothed or en- 

 tire ; rays 12 - 10, elongated. (H. tricuspis. Ell., with the leaves all nearly 

 entire : i li.ifl ul' the receptacle 3-toothed.) — Dry soil, in the western districts 

 of (Jeorgia, and westward. Sept.. — Stem .3° -4° high. Leaves 5'- 8' long. 

 Rays 1 V long. 



9. H. occidentalis, Kiddell, var. Dowellianus, Torr. & Gray. 

 Nearlv smo(»th ; stem branched above; leaves jjubesrcnt, triple-nerved ; the 

 lowest opposite, broadly ovate, obtu.se ; the upper alternate, oblong-ovate ; 

 peduncles long and slender; scales of the inv<ducre lanceolate, acuminate, 

 .slightlv ciiiate, shorter than the disk, appressed ; rays 12-15. — Mountains 

 of North Carolina. A ugu.«t - Sept. — Stem 4° - 5° high. Lower leaves 7' - 8' 

 long, 5' -6' wide. Rays 1' long. 



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

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

 and clasping ; tlie upper often alternate ; heads few, on short peduncles ; 

 scales of tlie involucre lanceolate, acute ; chaff of the receptacle entire ; rays 

 15-25. — Dry open woods in the upper di.=!tricts 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, acuiiiiuate, serrate, nearly .sessile, rough above, paler and rough- 

 hairy beneath, slightly 3-nerved at the base, all but the lowest alternate ; 

 scales of the involucre linear-lanceolate, spreading, hirsute; ra3-s 15-20. — 

 Low ground in the upper districts. Sept. — Stem 3° - 10° high. Leaves 2'- 

 5' long. Rays 1' long. 



