
A KEY TO THE FAMILIES 

g. Lobes of ovary two to 
five, with a common 
style. 
h. Ovary two- to three- 
lobed. 
Limnanthaceae 
h. Ovary five-lobed. 
Geraniaceae 
g. Ovaries with separate 
styles. Ranunculaceae 
e. Stamens inserted on the 
calyx. F 
f. Stamens twice as many as 
the pistils. Crassulaceae 
f. Stamens not twice as many 
2s the pistils. 
g. Stipules present. 
Rosaceae 
g. Stipules absent. 
Saxifragaceae 
ec. Ovary one, the styles and stigmas 
one to several. 
d. Ovary with one cell and one 
placenta. 
e. Corolla forming standard, 
wings and keel; filaments 
mostly united. Fabaceae 
e. Corolla not of standard, wings 
and keel; filaments mostly 
not united. 
f. Stamens ten or five; fruit 
smooth, slender. 
Casstaceae 
f. Stamens three or four; 
fruit spiny, globose. 
Krameriaceae 
d. Ovary with one or more cells 
and styles, and. two or more 
placentae and stigmas. 
e. Ovary one-celled. 
f. Corolla irregular; petals 
and sepals five. 
Violaceae 
f. Corolla regular or nearly so. 
g.- Ovules attached at the 
center or bottom of the 
ovary. Caryophyllaceae 
g. Ovules attached on two 
placentae. 
h. Stamens equal; pod 
on a stalk. 
Capparidaceae 
h. Stamens unequal; 
pod without a stalk. 
Cruciferae 
e. Ovary more than one-celled. 
0 
vary three-celled; trees 
with palmate leaves. 
Hippocastanaceae 
f. Ovary more than three- 
celled. 
g. Cells of ovary as many 
XVii 
as the sepals. 
h. Anthers opening by 
terminal pores; dwarf 
evergreen shrubby 
plants. Pyrolaceae 
h. Anthers opening by 
longitudinal slits. 
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