A KEY TO THE FAMILIES 
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b. Corolla more or less irregular. 
c. Fruit a many-seeded capsule. 
d. Ovary two-celled. 
Scrophulariaceae 466 
d. Ovary one-celled; plants without 
green foliage. Orobanchaceae 504 
c. Fruit of two or four seed-like nut- 
ets. 
d. Ovary four-lobed; plants mostly 
aromatic. Labiatae 434 
d. Ovary not lobed; plants rarely 
aromatic. Verbenaceae 434 
E. Ovary inferior. 
_a. Stamens eight or ten; evergreen shrubs. 
Ericaceae 340 
a. Stamens five or fewer in number. 
b. Plants tendril-bearing. Cucurbitaceae 518 
b. Plants not tendril-bearing. 
c. Stamens free, not united. 
d. Leaves alternate; stamens free 
fromthe corolla. Campanulaceae 520 
d. Leaves opposite or whorled; sta- 
mens inserted on the corolla. 
e. Stamens one to three. 
Valerianaceae 508 
e. Stamens four to five. 
f. Leaves opposite, never in 
whorls nor with stipules. 
Caprifoliaceae 512 
f. Leaves opposite and with 
stipules, or in whorls and 
without stipules. 
Rubiaceae 506 
c. Stamens united by their anthers. 
d. Corollas all strap-shaped and per- 
fect; juice milky. Cichoriaceae 570 
d. Marginal corollas strap-shaped, 
never perfect; disk corollas per- 
fect; juice not milky. 

Compositae 522 

