SFNGENESIA FRUSTRANEA 



433 



COREOPSIS. Gen. Pl. 



Involucrum duplex, | Involucrum double, 

 polyphyllum, exterius many leaved, the ex- 



aequale. Flof-es radia- terior 



one 



equal. 



ti. Semina compressa, Flowers radiate. Seeds 



emarginata, bidentata, compressed, emargin- 



vel bisetosa, setis nee ate, two toothed or two 



retrorsura aculeatis. awned; awns not re- 



Receptaciclwn p^\e2ice- trorsely aculeate. Be- 



um. 



ceptacle chaffy. 



* 



indivisis. 



Foliis oppositis, 



^ Leaves opposite^ 



I undivided. 



^H 



1. Lanceolata. 



Lm. 



C. foliis sessilibus, I Leaves sessile, Ian 



lanceolato 



integerrimis, ciliatis 

 pedunculis elongatis, 

 nudis; seminibus orbi- 

 culatis, scabris, alatis 



linearibus, I ceolate-linear, entire, 





apice bidentatis, emar- I emarginate 



ciliate; peduncles long, 

 naked; seed orbicular, 

 scabrous, winged, two 

 toothed at the summit 



f 



ginatis. 



H" 



Sp. pi. 3. p. 2256. Walt. p. 215. Mich. 2. p. 137- Pursh, 2. p. 567. 



«utt. 2. n- 1 70. ' ^ 



lUtt. 2. p. 179. 



opposite, sessile, linear-lanceolate 

 trmged toward the base. 



) Stem very short, divided at the base, 

 one; hairs, the summits naked. Leaves 



Flowers solitary, on naked branches about a foot 



Ian 



-uiaie, glabrous, membranaceous and coloured, (particularly the interior) 



tn^i A "'^'■g'"- f^rets of the ray about eight, bright y tllo*, dilated and 



oottied at the summit; of the disk somewhat numerous, yellowish. Seeds 



ry, tleciduous awns. Chaff of the recentacle very narrow 



'> 



sulHilate 



VOL. II. 



3 



