i2 7 4 SYNGENESIA. 



1567. Pascalia. Receptacle chaffy: feeds crowned with a tooth- 



ed margin : calyx imbricate. 



1568. BvvHTHALMUMReceptacle chaffy: feeds crowned with a 



margin, thofe of the ray compreffed, 

 fharp edged. 



1526. Rhanterium. Receptacle chaffy : down of 4 or 6-briftles 



which are feathery at top : calyx cylindri- 

 cal imbricate : feeds of the ray naked. 



1554. Sanvitalia. Receptacle naked : feeds of the ray 3-awned, 



of the centre naked : calyx imbricate. 



1559. Amellus. Receptacle chaffy: down fimple ; calyx im- 



bricate. 



1557. Tridax. Receptacle chaffy: down fimple : florets of 



the ray 3-parted. 

 1543. Rosenia. Receptacle chaffy : dawn capillary and chaffy : 



calyx imbricate, fcarious. 



1565. Verbesina. Receptacle chaffy: down awned ; florets of 



the ray about 5. 

 1536. Schlechten- Receptacle chaffy: down of 5 erect awns: 

 da li a. calyx double : florets of the centre 6 or 



8-cleft, 



1566. Ga linsog EAi Receptacle chaffy : down many-leaved, chaffy : 



calyx imbricate. 

 1545. Zinnia. Receptacle chaffy: down awned: ray 5- 



rlowered, permanent : calyx imbricate. 



1558. BalbiSia. Receptacle chaffy: down feathery, feflile : 



calyx 8 -leaved. 



1560. Starkea. Receptacle rough with hairs: down fimple, 



feffile : calyx imbricate. 



ORDER III. POLYGAMIA FRUSTRANEA. 



Florets of the centre hermaphrodite, thofe of the ray neuter and 



barren. 

 1581. Gorteria. Receptacle naked: down woolly : florets of 



the ray ligulate : calyx i-leaved, covered 



with fcales 

 1584. Centaurea. Receptacle briftly : down fimple: florets of 



the ray funnel-form, irregular, longer 



than thofe of the centre, or o. 

 1583. Zoegea. Receptacle briftly : down brittle-like : florets 



of the ray ligulate. 

 1580. MussiNEA. Receptacle briftly: down fimple: calyx 1- 



leaved, cylindrical, toothed. 

 1579. Didelta. Receptacle briftly : down chaffy : calyx double. 



1572. Rudbeckia, Receptacle chaffy: feeds crowned with a 



margin : calyx in a double row. 



