SYNGENESIA. 1271 



I ^CjS.Cefhalovhor AReceptacle naked, hemifphasrical: down chaffy 



many-leaved : calyx many-leaved, reflected. 



1506. Pentzia. Receptacle naked : feeds crowned with a mem- 



branaceous margin : calyx imbricate, he- 

 mifphaerical. 



1485. Ethulia. Receptacle naked : feeds crowned with 3 



membranaceous margin : calyx equal 



1487. Piquetra. Receptacle naked: down o : calyx 4- leaved. 



1504. Balsam it A. Receptacle naked : down o : calyx imbricate. 



ORDER II. POLYGAMIA SUPERFLUA. 



Florets of the difk hermaphrodite, of the margin female : all fertile. 



A. All the florets tubular, 



1508. Artemisia. Receptacle naked or villous : down o : florets 



of the margin fubulate and very entire. 



1513. Carpesium. Receptacle naked: -down o: florets of the 



margin 5-cleft. 

 J 507. Tanacetum. Receptacle naked ; feeds crowned with a 



margin : florets of the margin 3-cleft or o. 



1551. CoTULA. Receptacle naked or villous : feeds crowned 



with a margin : florets of the centre ^4- 

 cleft. 



1514. Baccharis. Receptacle naked : down fimple : female florets 



mixed with the hermaphrodites. 

 I515 Conyza. Receptacle naked: down fimple and rough : 



florets of the margin 3-cleft. 

 J509. Gnaphamum. Receptacle naked: down feathery or rough: 



calyx with fcarious coloured fcales : florets 



of the margin fubulate. 



1511. ElichrYSVM. Receptacle naked: down fimple or feathery: 



calyx imbricate, radiate, with the ray co- 

 loured. 

 J5io.XERANTHEMUM^^^>^/f chaffy : down chaffy and briftly : 



calyx imbricate, radiate, with the ray flat- 

 tened and coloured. 



1552. Anacyclus. Receptacle chaffy: feeds crowned with an 



emarginate membranaceous margin, thofe 

 of the margin membranaceous at the fides. 



B. Semiflofcular and fomewhat clipped. 



1 512. Denekia. Receptacle naked : downo: calyx imbricate. 

 J53I.PERDICIUly^. Receptacle naked: down fimple: florets 3- 



cleft, the outer larger and 3-lobed. 



