SYNGENESIA. 
SUPERFLUA. 
eoalif - (1) Florets all tubular. 
ARTEMIS‘IA......  iiae * almost naked : Down none: 
pass Florets in the circumference 
: without a pefal. 
TENACETUM..... Recept. naked: Down only a sort 
of border: Bloss, of the cir- 
' __ cumference 3-cle : 
CONY’ZA... .«+.- Recept. naked tex. hair-like: 
on of the circumference 3- 
cleft 
GNAPHA’LIUM. . . Recept. seas: : Down feathered, 
or hair-like : Ca/. with skinny ~ 
concave scales. 
Sera vulgaris. Tussilago Petasites, hy brida, Aster 
Erigeron. Bidens. ] : ‘ 
(2) Flowers radiate. 
BEathdlos - ss v5 Recept. naked: Down none: Cal. 
| simple, with equal scales. 
MATRICA/RIA. . chee Ta naked: Down none: Cal. 
iled ; scales acute. 
CHRYSAN’THEMUM. ee naked : Down none: Cal. 
the inner scales membrana- 
ceous. 
DORO’NICUM. ... . Recept. naked: Down hair-like: 
ch alan florets, without 
1) © eee die ee : Down. hair-like : 
— with 2 bristles at the 
‘ERI’GERON....... Recept. naked: Down hair-like: | 
loss. in the circum ce 
ry slender. 
SOLIDA‘’GO.: «...; t. naked: Down hair-like? 
loss. of the circumf 
about 6 ; remote. 
