Family Key 19 
II. Pistil only 1; stamens not on the calyx (except in SAXIFRAGACEAE). 
J. Sepals and petals 4. 
K. Leaves pinnate; plant with mustard or turnip taste, without bad 
odor. CRUCIFERACEAE (p. 176) 
KK. Leaves ternate or palmate; plant without mustard or turnip 
taste, with bad odor. Cleome in CAPPARIDACEAE (p. 192) 
JJ. Sepals and petals 3 or 5. 
L. Leaves pinnately compound; plants glabrous or floccose-woolly ; 
flowers solitary on terminal or axillary peduncles. 
LIMNANTHACEAE (p. 246) 
LL. Leaves palmately compound; plants hairy but not woolly; 
flowers in panicles or racemes or heads. SAXIFRAGACEAE (p. 195) 
HH. Flowers irregular. LEGUMINACEAE (p. 224) 
GG. Ovary inferior. 
M. Flowers in compound umbels; ovary 2-celled or the 2 carpels almost 
separate; fruit dry. UMBELLACEAE (p. 271) 
MM. Flowers in umbels; umbels in simple or compound panicles; ovary 
2—5-celled; fruit fleshy. Aralia in ARALIACEAE (p. 270) 
CC. Petals more or less united, but sometimes only at their very base. 
N. Corolla irregular. 
O. Sepals 4—5, more or less united; petals 5; stamens 5 or 9 or 10; pistil 
simple; stipules present. LEGUMINACEAE (p. 224) 
OO. Sepals 2, separate; petals 4; stamens 6; pistil compound; stipules none. 
FUMARIACEAE (p. 175) 
NN. Corolla regular or very nearly so or none at all. 
P. Ovary superior or mainly so. 
Q. Leaflets 3, not spine-like, not spine-tipped; styles or stigmas | or 5. 
R. Leaflets very unequal, the lateral two very much smaller than the ter- 
minal one. Solanum in SOLANACEAE (p. 339) 
RR. Leaflets all three about the same size. 
S. Marsh plants; leaflets oblong to obovate, obtuse; stems 1—2 cm. 
thick. Menvanthes in MENYANTHACEAE (p. 307) 
SS. Not marsh plants plants; leaflets obcordate; stems less than 5 mm. 
thick. OXALIDACEAE (p. 243) 
QQ. Leaflets more than 3 or spine-like or spine-tipped; styles or stigmas 
to 3: 
T. Stigmas 3; capsule 3-celled. POLEMONIACEAE (p. 311) 
TT. Stigmas 1—2; capsule 1—2-celled. 
HyYDROPHYLLACEAE (p. 316) 
PP. Ovary inferior or mainly so; flowers in heads. 
COMPOSITACEAE (p. 372) 
GROUP 15—Dicotyledonous herbs without green color, and with alternate simple 
leaves or scales 
A. Vines, twining, white or yellow; ovary 2-celled, 1|—-4-seeded; leaves mere minute 
scales or almost none. CONVOLVULACEAE (p. 309) 
AA. Not vines, variously colored; ovary not 2-celled, many-seeded; leaves not minute, 
larger. 
B. Leaves spatulate, covered with long glandular hairs, all basal; plants of peat 
bogs. DROSERACEAE (p. 192) 
BB. Leaves not spatulate, not covered with long glandular hairs, not all basal; plants 
not of peat bogs. 
