24 Family Key 
D. Leaves all basal, on upper side greasy to touch; corolla spurred at base, 
2-lipped; stamens 2. Pinguicula in PINGUICULACEAE (p. 361) 
DD. Leaves all basal, not greasy to the touch; corolla not spurred; stamens 2 
or 4 or 5. 
E. Corolla 2-lipped; ovary 1—2-celled. SCROPHULARIACEAE (p. 341) 
EE. Corolla not 2-lipped; ovary 5-celled. BALSAMINACEAE (p. 249) 
BB. Corolla regular or very nearly so. 
F. Plants twining; leaves none or scattered. CONVOLVULACEAE (p. 309) 
FF. Plants not twining; leaves reniform, palmately veined, crenate, all basal. 
Nephrophyllidium in MENYANTHACEAE (p. 307) 
FFF. Plants not twining; leaves not reniform, not palmately veined, rarely crenate 
or all basal. 
G. Leaves fleshy-linear, 2.5——7.5 cm. long, all basal; flowers in dense heads; 
plants not far from the seashore. PLUMBAGINACEAE (p. 304) 
GG. Either leaves not as above in all characters, or else flowers not in heads. 
H. Leaves very fleshy; flowers in cymes, usually yellow. 
CRASSULACEAE (p. 193) 
HH. Leaves either not fleshy or else the flowers in long narrow spikes. 
I. Leaves all basal; flowers in spikes; corolla scarious, veinless. 
bye PLANTAGINACEAE (p. 362) 
II. Either leaves not all basal or else the flowers not in spikes; corolla 
not scarious, veined. 
J. Ovary deeply 2- or 4-lobed, maturing into 2 or 4 separate or sepa- 
rable nutlets. BORAGINACEAE (p. 321) 
JJ. Ovary not deeply lobed, not maturing into separate nor separable 
nutlets. 
K. Style 3-cleft at apex; capsule 3-celled. 
POLEMONIACEAE (p. 311) 
KK. — Styles or stigmas |—2; capsule 1 —2-celled. 
L. Stamens opposite the corolla lobes; ovary |-celled; placenta 
central; style |; stigma capitate. PRIMULACEAE (p. 300) 
LL. Stamens alternate with the corolla lobes; often differing from 
the above in some of the other characters. 
M. Corolla 20 mm. or more long. SOLANACEAE (p. 339) 
MM. Corolla 16 mm. or less long. 
N. Fruit a berry; inflorescence not scorpoid; style 1. 
SOLANACEAE (p. 339) 
NN. Fruit a capsule; inflorescence somewhat scorpoid; styles 
often 2. HyYDROPHYLLACEAE (p. 316) 
AA. Ovary inferior or mainly so. 
O. Vine with tendrils. CUCURBITACEAE (p. 369) 
OO. Not a vine; tendrils none. 
P. Flowers not in heads. 
Q. Corolla regular; stamens distinct. CAMPANULACEAE (p. 369) 
QQ. Corolla irregular by not being equally split between the lobes; stamens 
united by their anthers. LOBELIACEAE (p. 370) 
PP. Flowers in heads. CoMPOSITACEAE (p. 372) 
