334 



imbricated. Flor. of tlie radius numerous, linear, 

 very narrow. Anth. simple. 



400. SOLIDAGO. Recept. naked, pitted. Down sim- 

 ple. Cal. imbricated, with close scales. Flor. of 

 the radius about 5. 



399. ASTER. Recept. naked. Down simple. Cal. im- 

 bricated ; lowermost scales spreading. Flor. of the 

 radius more than 10. 



398. SENECIO. Recept. naked. Down simple. Cal. 

 double ; the innermost cylindrical, of numerous 

 equal scales ; outer of several minute ones ; scales 

 all withered at the extremity. 



397. TUSSILAGO. Recept. naked. Down simple. Cal. 

 simple, tumid at the base ; scales numerous, equal, 

 somewhat membranous. Seed obovate, compressed. 



402. CINERARIA. Recept. naked. Down simple. Cal. 

 simple, cylindrical ; scales numerous, equal. Seed 

 quadrangular. 



408. ANTHEMIS. Recept. chaffy. Seed crowned with 



a slight border. Cal. hemispherical ; scales nearly 

 equal. Flor. of the radius numerous, oblong. 



409. ACHILLEA. Recept. chaffy. Down none. CaL 



ovate ; scales imbricated, unequal. Flor. of the 

 radius 5 — 10, roundish, somewhat heart-shaped. 



Bidens 2. 



Orderlll. POLYGAMIA FRUSTRANEA. 



Florets of the disk perfect and fertile; those 

 of the circumference neuter. 



410. CENTAUREA. Recept. bristly. Down simple, or 



feathery, rarely wanting. Flor. of the radius funnel- 

 shaped, dilated, irregular, without stamens or style. 



A natural tribe, consisting of the genuine Compound Flow- 

 ers, having a common calyx, and combined anthers. 



Compositce. Linn. 49. Cinarocephalce, 54>; Cichoracece, 53 ; 

 and Cojymbifera^, 5 5, of J ussieu. See Granuiiar 120 — 125. 



