H2 SYNGENESIA.— FRUSTRANEA. 



HAB. Shady wet places. Aug. © . Stem 2 ft. 

 high, branch. ; rays ; steds 2-awned. 

 t. B. connata: flowers discoid ; exterior calyx thrice 

 as long as the flower ; cauline leaves ternate ; la- 

 teral leaflets connate; floral ones oblong-lanceolate. 

 HAB. Meadows, &c. Aug.— Sept. ©./Stem 2 

 — 3 ft. high, smooth; leav. subglauc. 

 I B. bipinnata : flowers subradiate ; exterior calyx as 

 long as the interior ; leaves bipinnate ; segments 

 linear-pinnatifid. 

 HAB. Fields. July— Sept. ©. Stem B— 12 tw, 

 high; leav. finely divid. ; rays 0, or 1 — 3. 

 3. B. Beckii: stem subsimple ; submersed leaves, di- 

 vided into many linear and dichotomous segments; 

 flower erect, solitary, terminal. 

 HAB. Deep water. Aug. 4. ? Stem 2—5 ft. 

 long; emersed leav. lanceoL or trifid; fl. radiate. 



i02. COREOPSIS. Tickseed-sunflower. Composite 



* Leaves opposite, undivided. 



C. rosea: small, very smooth ; stem simple : leaves 

 linear, entire ; axils leafy ; flowers few, long- 

 pedunculate, axillary and terminal ; seeds very 

 entire, naked. 



HAB. Swamps. Aug. U. A foot high; lea.v. 

 subconnate ; rays 3-tooth., red. 



* * Leaves opposite, divided. 



C. trichosperma : smooth ; leaves subquiuate, pin.- 

 nate ; segments linear-lanceolate, serrate ; flowers 

 corymbed ; leaflets of.the exterior calyx ciliately 

 serrate; ray9 entire; seeds cuneate, 2 — 4-toothed. 



HAB. Cedar swamps, &c. Aug. — Sept. £. Stem 

 2 ft. high, dichot.; rays lanceoL, yell. 



C. tripteris: smooth; leaves petiolate, lanceolate } 

 very entire ; radical ones pinnate; of the stem ter- 

 nate; rays entire; seeds obovate, naked at the 

 apex. 



HAB. Mountain meadows. Aug. H . Stew 4 ft. 

 high, terete: fl. small, yell, 



I. 



