SYNGENESlA, 1273 



1522. Mutisia. Receptacle naked: down feathery: calyx cy- 



lindrical, imbricate : florets of the centre 

 3-cleft. 



1523. Brachyglo. Receptacle naked : down feathery : calyx cy- 



tis. lindrical, fimplej equal ; florets of the cen- 



tre 5-cleft. 



1534. Bellium. Receptacle naked : down awned and 8-leaved : 



calyx fimple. 



1556. Actinea. Receptacle naked : down chaffy, many-leaved : 



calyx fimple* 



I538. Tagetes. Receptacle naked: down awned: calyx 1- 



leafed : florets of the ray 5. 



1532. Helenium. Receptacle naked, except the calcine chaffs 



in the margin : down 5. awned : calyx ma- 

 ny-parted -.florets with 3-cleft rays. 



1541. Pectis. Receptacle naked: down awned: calyx 5- 



leaved : ray 5-flowered. 

 1540. SchkuHriA. Receptacle naked: down 5-leaved, chaffy 



calyx 5-leaved : florets of the ray folitary 

 1539* Heterosper- Receptacle naked : feeds of the margin naked 

 mum. and winged, thofe of the centre 2-awned 



calyx double, 

 1549. Boltonia. Receptacle with honey-comb like hollows 



down of obfcurely toothed awns. 



1542. Leys era. Receptacle naked, except the calicine chaff 



in the margin : down feathery : calyx fca- 



rious. 

 1563 Siegesbeckia. Receptacle chaffy: down o : florets of the 



centre 5-cleft. 

 I553. Anthem is. Receptacle chaffy : feeds crowned with a 



flight margin: calyx hemifphcerical : florets 



of the ray more than 5, oblong. 

 1555* Achillea. Receptacle chaffy : down o: calyx o: florets 



of the ray 5-10, inverfely heart ihaped 



and roundifh. 



1529. Tetragono* Receptacle chaffy: down o: calyx 4-fided, 



theca. 4-parted. 



1530. Ximenesia. Receptacle chaffy : down o : feeds of the cen- 



tre winged, thofe of the margin notched : 



calyx nearly equal. 

 1564. Phaethusa. Receptacle naked: down o: feeds briftly : 



calyx imbricate : florets of the ray 1-3. 

 1635. Georgina. Receptacle chaffy : down o : calyx double. 



1544. Relhania. Receptacle chaffy : down membranaceous, 



ihort : calyx imbricate, fcarious, 



VOL. VI. — C 3 



