1 270 SYNGENESIA. 



1469. Onopordon. Receptacle pitted : down capillary: corol flof- 



cular : calyx imbricate, roundifh. 



* Centaurea Rhafontica^ nigra. 



. C. Florets tubular. 



1494. Staehelina. "Receptacle chaffy: down feathery: anther* 



tailed at the bafe : calyx hemifphserical, 

 imbricate. 



1496. Haynea. Receptacle chaffy, flefhy ; down fimple : calyx 



ovate, imbricate. 



1501. Calea. Receptacle chaffy: down fimple: calyx im- 



bricate. 



1481. Bidens; eceptacle chaffy, flat: feeds fquare : down 



awned : calyx nearly equal, inverted with 

 fcales. 



1480. Spilanthes. Receptacle chaffy, conic : down awned : calyx 



nearly equal. 



1505. Athanasia. Receptacle chaffy: down chaffy: calyx im- 

 bricate. 



1503. Santolina. Receptacle chaffy: down o: calyx imbricate 



hemifphzerical. 



1502. Caesulia. Receptacle chaffy : feeds involved in the chaff: 



down o : calyx 3 -leaved. 



1500. Tarchonan. Receptacle villous: feeds involved in down: 

 thus. calyx 1 -leaved, many-cleft. 



1489. Kuhnia. Receptacle naked : down feathery: calyx im- 



bricate, cylindrical. 



1488. Eupatorium. Receptacle naked: down fimple or rough: 



calyx imbricate, cylindrical : flyle longer 

 than the corol, cloven half way down. 



1499. ChrysOCOMA. Receptacle naked : down fimple : calyx im- 

 bricate, hemifpherical. 



i486. Mikania. Receptacle naked: down fimple: calyx 4 Q» 



6-leaved,4or 6-flowered. 



1484. Kleinia. Receptacle naked : down fimple : calyx fimple. 



1483. Cacalia. Receptacle naked: down fimple: calyx in- 



verted with fcales. 



1482. Lavenia. Receptacle naked : down 3-awned, glandular 



at the top : calyx ovate, fomewhat im- 

 bricate. 



1490. Ageratum. Receptacle naked: down chaffy: calyx cy- 



lindrical, of a double row of leaves. 



1 49 1. Stevia. Receptacle naked: down an awned chaff: 



calyx cylindrical, of a fingle row of leaves. 



1492. Hymenopap- Receptacle naked : down many-leaved, chaffy: 



pus. calyx many-leaved, fp reading. 



