SYNGENESIA. 1269 



B. Flowers in heads* 



£472. ATRACTYLiS. Receptacle chafFy : down feathery : carol ra- 

 diate : calyx imbricate. 



1473. Acarna. Receptacle chafFy : down feathery: corol flof- 



cular : calyx imbricate, double. 



1466. Serratula. Receptacle chafFy : down feathery : corol flof- 



cucular : calyx imbricate, cylindrical. 



1479. Carthamus. Receptacle with chafFy bridles : down fimplc 



and chafFy or o: corol flofcular : calyx im- 

 bricate, with fpinous teeth on the fcales. 



1471. Carlina. Receptacle with chafFy briftles : clown feathery 



and chafFy : corol flofcuiar : calyx imbri- 

 cate, radiate. 



1463. Arctium. Receptacle chafFy : down briflly and chafFy ; 



corol flofcular : calyx globular, with in- 

 flected hooks on the top of the fcales. 

 I493. Pteronia. Receptacle with many- parted chafF: down 



fomew hat feathery : corol flofcular: calyx 

 imbricate, with the fcales carinate. 



1476. Stob-^a. Receptacle briflly, pitted : down chafFy : corol 



flofcular; calyx imbricate, with fpinous 

 teeth on the fcales. 

 1495. Lachnosper- Receptacle villous : feeds involved m the 

 mum. down : calyx cylindrical, imbricate. 



1477. Barnadesia. Receptacle villous : down of the difk briftly, 



of the margin feathery: corol radiate; 

 calyx imbricate, fomewhat fweliing at the 

 bafe. 



1470. CynAra. Receptacle briflly: down feflile, feathered: 



calyx imbricate, with flefny carinate fcales. 



^478. Johannia. Receptacle villous : down feathery : corol flof- 



cular: calyx imbricate, radiate. 



I468 Cnicus. Receptacle villous : down feathery : corol flof- 



cular : calyx imbricate, fweliing. 



1467. Carduus. Receptacle villous: down capillary: corol 



flofcular : calyx imbricate, fweliing. 

 1474 Onoseris. Receptacle nearly naked : down fimple : corol 



radiate : calyx imbricate. 

 1475. Stokesia. Receptacle naked: down of 4 bridles : corol 



flofcular, radiate : calyx imbricate. 

 1465. Liatris. Receptacle naked: down feathery coloured : 



corol flofcular : calyx oblong, imbricate. 



1464. Ver^onia. Receptacle naked : nown double ; the outer 



chafFy, inner capillary : corol flofcular : 

 calyx ovate, imbricate. 



