333 



Order 11. POLYGAMIA SUPERFLUA. 



Florets all perfect arid fertile, though those 

 of the circumference have no stamens. 



* Corolla of the marginal Jiorets obsolete, or wanting. 

 Discoid. 



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



branous crown. Cal. imbricated, hemispherical. 

 Florets of the circumference 3-cleft, obsolete, some- 

 times wanting. 



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

 bricated, roundish. Fl. of the circumference 3-cleft. 



394. GNAPHALIUM. Recept. naked. Down rough, 

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

 Fl. of the circumference awl-shaped. 



393. ARTEMISIA, i?^^^/*/. either naked or hairy. Down 



none. Cal. imbricated ; scales rounded, converging. 

 Fl. of the circumference awl-shaped, entire. 



Tussilago 2. 



** Corolla of the marginal florets ligulate. 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 edoes. 



o 



405. CHRYSANTHEMUM. 7?ray)/. naked, rather con- 



vex. Down none. Cal. hemispherical, imbricated; 

 scales with a dilated membranous border. 



40G. PYRETHRUM. /j^myV. naked. .Sr^r/ crowned with 

 a border. (\d. hemis])herical, imbricated ; scales 

 rather aculi', meuibranous at the edires. 



403. DOKONICrM. Rerrpt. naked. Down simple; 

 wanting on the seeds of the radius. Cal. a double 

 row of equal scales, hunger than the disk. 



401. INV^LA. Rerrj)t. naked. Doxcn siuiple. C/i/. im- 

 bricated. Florets of the ra(nus very nunuTons, linear. 

 Anthers with 2 bristles at the base. 



39G. ERICiEROX. Rrcepf. naked. Down sim[)le. Cnl. 



