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TETRANDRIA. 
I, Monogynia and Digynia. 
A. Flowers complete. 
re 
a. Calyx double; the interior calyx adnate 
to the ovary. Corolla gamopetalous. 
Dipsacus. 
b. Calyx simple. Corolla gamopetalous, 
inferior. 
Plantago.—Corolla-limb regular, 4-part- 
ed. Stigma filamentose. Capsule cir- 
cumscissile. 
Gentiana.—Ovary 1. Placente 2. Style 
short. Stigmas 2, flat and thin. Cap- 
sule septicidal. Seeds minute. 
Microcala (Cicendia).—Ovary 1. Pla- 
cents 2. Style filiform. Stigma pel- 
tate, Seeds minute. 
c. Corolla gamopetalous, superior. 
Galium.—Corolla rotate. Fruit a 2- 
coccous schizocarp. 
d. Corolla 4-petalous, inferior. 
Euonymus.—Petals inserted on a glan- 
dular disc. Stamens inserted on the 
same disc, and alternating with them. 
Fruit a capsule. Shrub. 
