CORYMBIFEREJE. 193 



rate. Fhwers on axillary and terminal peduncles, dichotoniously divided. 

 Vcllow. % Carolina. 



4. C IEmlkri. Strm slabrous, an^ulnr. Leaves sessile, glabrous, acute 

 ■teach end, cJuspinij, andsouiewliat connate. /Yoioer* opposite, axi lary, the 

 upjxT ones in corymbs, the e.vierior involucre smaller tliun the interior ; ray 

 florets about 8, entire. SceiU compressed, mariiined. 



Yellow. %. July — August. Upper Carolina. 



5. C. Rosea. Stem glabrous, simple or branching. Leaves opposite, con- 

 nate; linear, entire, f/oioerson a.xillary and terminal peduncles, exterior 

 \v\\ ' >inall ; ray florets about 8. /S«e<f entire. 



-d. '7|- Aui:.— Sept. In damp pine barrens, common. 10-12 in 

 (6.) Leaves opposite divided. 



6. C. A' vTA. iS/rwi pubescent, or nearly glabrous. Ijeoves bcssWc, 

 entire, obli eolate, finely pul>eseent, the lower ones divided, with 2 

 small lateral kaiict^al the base. i-^)iivr*- axillary, and terminal; exterior in- 

 volucre equal to the interior ; ray florets about 8, toothed. 



Yellow. '71-. Auiiust — October. Mountains. 3-4 feet. 



7. C. DivERsiFouA. 6'/eOT pubescent, dichotomously divided, lower leaves 

 trifoliate, the leaflets oboyate, or riearly orbicular, the upper ones spaiulate 

 lanceolate, all entire, sprinkled with glandular hairs. Flowers on long pe- 

 duncles exterior involucre emial to the interior, iieed nearly round. 



Yellow. 1\.. May — July. Middle Carolina, Georgia. 



8. C. Sexifolia. Stern pubescent, branching towards the summit, angled. 

 Lea t** sessile, opposite, trifoliate, leaflets pubescent, lanceolate. Flou-ersin. 

 terminal corymbs; exterior involucre equal to the interior, both pubescent ; 

 ray florets pubescent on the outer surface, about 8. 



Yellow. 11-. June — August. Pine lands. 2-3 feet. 



9. C. Verticillata. Stem erect, angled, striate, glabrous, branching near 

 ihe summit. Leaves opposite, trifoliate, sessile, middle leaflet frequently 3 



fiarted ; leaflets, linear lanceolate, entire. Flowers in corymbs, exterior invo- 

 ucre usually 10-leaved, interior 8, ray florets 8. Seed compressed, cliafl' fili- 

 form, dilated at the summit. 



Yellow. 4- June— August. Dry soils. 2-3 feet. 



10. C. Te.vtifolia. Stem glaI)rous, slightly angled, branching towards the 

 summit. Leaves trifoliate, sessile, leafleTs many parted, with linear, entire 

 segments. Flowers in corymbs, exterior involucre, with about 8 lanceolate 

 leaves. 



Yellow. %.. July— August. Upper Carolina. 2-3 feet. 



11. C. TRicnosPERMA. •S/ewi glabrous, branching. leaves opposite, pin- 

 nate, leaflets serrate. F/oM«r< in corymbs, exterior involucre, with 8 ciliate 

 leaves; ray florets 8, entire; chafflinear-lanceolate. 



Yellow. %. August — October. Upper Carolina. 2-3 feet. 



12. C. Mms. S^^wi obtusely angled, glabrous, much branched. Leaves 

 6' , bipinnatifid, segments linear serrulate, slightly scabrous. Flowers 

 h: . il panicles ; exterior involucre, with serrulate, linear leaves, interior 

 puLw^ccnt at the base; ray florets H, obuvate. 



Yellow. %. August — September. Wet grounds. 3-4 feet. 



13. C. Aristata. S/em pubescent. Leaoe«quinna(e, leaflets pinnate, ser- 

 rate. Flowers lame ; flon t« of the ray eniire, broad, oval. Seed cunrate, ob- 

 ovate, 2 awned, awns very long, divaricate. Elliott. 



Yellow. %. August — September. 



14. C PuBEscExs. S'em pubescent, obtusely angled, sparingly branched. 

 Leaves quinnate, pinnate ; leaflets lanceolate, ob'use, entire, the lateral ones 

 small. Flowers terminal on long branches ; exterior involucre about equal 

 to the intf>ri'>r; ray florets 8, broader at the summit, iieed slightlv winged. 



Yellow. 71-. August — September. Western Georgia. 2-5 tect. 



15. C. Tripteris. S<^m glabrous, branching towards the summit, fistular. 

 Ijeaves opposite, the upper ones trifoliate ; leaflets lanceolate, glabrous, entire, 



PART II. 15 



