1*76 SYNGENESIA. 



1604. Iva. Receptacle hairy : down o : calyx 3-leaved. 



1605. FlLAGO. Receptacle chaffy: down o: florets of the 



margin between the fcales or' the calyx. 



1606. MlCROPUS. Receptacle chaffy: down o: florets of the 



margin fheathed in the fcales of the calyx. 



1589. Wedelia. Receptacle chaffy : feeds crowned with 4 or 5 



teeth : calyx fimple, 4 or 5 leaved. 

 1585. AciCARPHA. Receptacle chaffy : down o : calyx 5- parted. 



1590. Poj-YMNIA. Receptacle chaffy : down o: calyx double, the 



outer 5-leaved. 

 1593. Melampodium^//^ chaffy : feeds with a heart-fhaped 



involute converging crown : calyx 5-leaved. 

 1603. PARTHENIUM. Receptacle chaffy; feeds naked: calyx 5- 



leaved. 

 J597. Arctotheca. Receptacle chaffy : down o : calyx imbricate. 



1591. Trixis. „ Receptacle chaffy: down o : feeds villous at 



top : florets of the ray 3-cIeft : calyx im- 

 bricate. 

 1588. Silphium. Receptacle chaffy: down 2-awned : calyx 



fpreading every way. 



1592. Chrysogoxum. Receptacle chaffy: down 3-awned : feeds in- 



verted with their proper calycles. 



ORDER V. POLYGAMIA SEGREGATA. 



Florets Jeparated by a proper perianth containing one or more 

 florets > and placed within a common calyx. 



1621. Tetranthu$. Perianth i-flowered, oblique : down o : syn- 



genefia a^qualis. 



1618. Rolandra. Perianth i-flowered, 2-valved: doivn o: 



fyngenefia asqualis. 



j6i2. Nauenburgia. Perianth i-flowered, 2-valved: down o: 



fyngenefia fuperflua. 



1611. Laxmannia. Perianth 1 -flowered, 2-awned; down o: 



florets 4-cleft ; fyngenesia asqualis. 



1620. Calycera. Perianth 1 -flowered, 5-rayed ; down o ; fyn- 

 genefia fruftranea. 



J613.N0CCUEA. Perianth i-flowered, 5-toothed receptacU 



pitted. 



1619.B0QPIS. Perianth i-flowered, many-toothed; recep- 



tacle chaffy. 



1623. Stoebea: Perianth 1 -flowered ; down feathery; fyn- 



genefia squalls. 



1609. Oedera. Receptacle chaffy ; down chaffy ; perianth 



containing both tubular andligulate^r^/J. 



