( 



333 



Order 11. POLYGAMIA SUPERFLUA. 



Florets all perfect and fertile, though those 

 of the circumference have no stamens. 



* Corolla of the marginal forefs obsolete, or wanting. 

 Discoid. 



392. TANACETUM. Recept. naked. Seed with a mem- 

 branous crown. Cal. imbricated, hemispherical. 

 Florets of the circumference S-cleft, obsolete, some- 

 times wanting:. 



395. CONYZA. Recept. naked. Down rough. Cal. im- 



bricated, roundish, i^?. of the circumference 3 -cleft. 

 394.. GNAPHALIUM. Recept. naked. Down rough, 

 or feathery. Cal. imbricated ; scales filmy, coloured. 

 Fl. of the circumference awl-shaped. 



3'93. ARTEMISIA. Recept. either naked or hairy. Down 

 none. Cal. imbricated ; scales rounded, converging. 

 Fl. of the circumference awl-shaped, entire. 



Tussilago 2. 



** Corolla of the margi?ialJlorets ligidate. Radiant. 



404'. BELLIS. Recept. naked, conical. Down none. Cal. 

 hemispherical ; scales equal. Seed obovate. 



407. MATRICARIA. Recept. naked, nearly cylindrical. 

 Down none. Cal. nearly flat, imbricated ; scales 

 membranous at the edges. 



405. CHRYSANTHEMUM. i?^c^;p^. naked, rather con- 



vex. Down none. Cal. hemispherical, imbricated; 

 scales with a dilated membranous border. 



406. PYRETHRUM. Recept. x\a\ied. S^et? crowned with 



a border. Cal. hemispherical, imbricated ; scales 

 rather acute, membi'anous at the edges. 



403. DORONICUM. Recept. naked. Down simple; 

 wantinor on the seeds of the radius. _ Cal. a double 

 row of equal scales, longer than the disk. 



401. INULA. Recept. naked. Down simple. Cal. im- 

 bricated. Florets of the radius very numerous, linear. 

 Anthers with 2 bristles at the base. 



396. ERIGERON. Recept. naked. Down simple. .Cal. 



