SYNGENESIA. 
879 
(2) Flowers radiate . 
BEL/LIS. Recept. naked, conical: Down none : Cal. hemis¬ 
pherical, with equal scales. 
(MATRICA'RIA. Recept. naked, nearly cylindrical: Down 
none : Cal. tiled, nearly flat; scales membranous at the 
edges. E.) 
CHRYSANTHEMUM. (Recept. naked, rather convex: Down 
none : Cal. hemispherical, imbricated ; scales with a di¬ 
lated, membranous border. E.) 
(PYRE'THRUM. Recept. naked : Seed crowned with a bor¬ 
der : Cal. hemispherical, imbricated; scales rather 
acute, membranous at the edges. E.) 
DORO'NICUM. Recept. naked: Doivn hair-like: Strap- 
shaped florets, without down: ( Cal. a double row of 
equal scales, longer than the disk. E.) 
I'NULA. Recept. naked: Down hair-like : Anthers with two 
bristles at the base. 
ERI'GERON. Recept. naked : Down hair-like : Florets of the 
circumference very slender: (Anthers simple. E.) 
SOLIDA'GO. Recept. naked, pitted : Down hair-like : Cal . 
tiled with close scales : Florets of the circumference five 
or six, remote. 
CIINfERA'RIA. Recept. naked : Down hair-like : (Cal. simple, 
cylindrical; scales equal: Seed quadrangular. E.) 
SENE'CIO. Recept . naked : Down hair-like : Cal. with scales 
shrivelled at the ends. 
TUSSILA'GO. Recept. naked: Doivn hair-like: Cal . tumid 
at the base ; scales somewhat membranous: (Seed ob- 
ovate, compressed. E.) 
AS'TER. Recept. naked: Down hair-like : Cal. lowermost 
scales spreading: (Florets of the circumference more 
than ten. E.) 
ANTHEMIS. Recept. chaffy: Down none : Cal. hemispheri¬ 
cal : (Florets of the circumference numerous: Seed 
crowned with a slight border. E.) 
ACHILLE'A. Recept . chaffy : Down none : Cal . oblong: 
Florets of the circumference about five, somewhat heart- 
shaped. 
VOL. HI. 
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