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SYNGENESIA. *273 
Receptacle naked : down feathery : calyx cy- 
lindrical, imbricate : florets of the centre 
3- cleft. 
Receptacle naked : down feathery : calyx cy- 
lindrical, fimple, equal ; florets of the cen- 
tre 5-cleft. 
Receptacle naked : down awned and 8-leaved : 
calyx fimple. 
Receptacle naked : doivn chaffy, many-leaved : 
calyx fimple. 
Receptacle naked ; down awned : calyx i - 
leafed : florets of the ray 5. 
Receptacle naked, except the calcine chaffs 
in the margin : down 5-awhed : calyx ma- 
ny-parted : florets with 3-cleft rays. 
Receptacle naked : down awned : calyx 5- 
leaved : ray 5-fiowered. 
Receptacle naked : down 5-Ieaved, chaffy : 
calyx 5-lcavcd ; florets of the ray folitary. 
Receptacle naked : feeds of the margin naked 
and winged, thofe of the centre 2-awned ; 
calyx double. 
Receptacle with hdney-comb like hollows : 
down of obfeurely toothed awns. 
Receptacle naked, except the calicine chaffs 
in the margin -. down feathery ; calyx fca- 
rious. 
Receptacle chaffy : down 0 : florets of the 
centre 5-cleft. 
Receptacle chaffy : feeds crowned with a 
flight margin : calyx hemifphasrical : florets 
of the ray more than 5, oblong. 
Receptacle chaffy : down o : calyx o : florets 
of the ray 5-10, inverfdy heart lhaped 
and roundifh. 
Receptacle chaffy : down o : calyx 4-fided, 
4- parted. 
Receptacle chaffy : down o : feeds of the cen- 
tre winged, thofe of the margin notched ; 
calyx nearly equal. 
Receptacle naked : down o : feeds briftly : 
calyx imbricate : florets of the ray 1-3. 
Receptacle chaffy : down o : calyx double. 
Receptacle chaffy : down membranaceous, 
Ihort : calyx irabricatej fcarious. 
VOL. VI. — C 3 
