Family Key 23 
J. Plants with mustard or turnip taste; sepals 4; petals 4; stamens 6. 
CRUCIFERACEAE (p. 176) 
JJ. Plants without mustard or turnip taste; sepals and petals rarely 4; sta- 
mens rarely 6. 
K. Flowers regular or very nearly so, not spurred. 
L. Leaves basal, linear, 2.5—7.5 cm. long, somewhat thick or fleshy; 
flowers in a dense head, reddish; near the seashore. 
PLUMBAGINACEAE (p. 304) 
LL. Leaves not as above in all characters; flowers not in a dense head. 
M. Sepals 2. PORTULACACEAE (p. 148) 
MM. Sepals 3—8. 
N. Leaves coriaceous, evergreen, glabrous. 
O. Carpels 2—4; styles or. sessile stigmas 2—4. 
Saxifraga in SAXIFRAGACEAE (p. 195) 
OO. Carpels 5; style 1; stigmas | or 5. 
PYROLACEAE (p. 291) 
NN. Leaves not coriaceous nor evergreen, often not glabrous. 
P. Leaves very fleshy. 
Q. Petals 5, yellow; sepals 5. CRASSULACEAE (p. 193) 
QQ. Petals usually not 5, white; sepals usually not 5. 
PORTULACACEAE (p. [48) 
PP. Leaves not fleshy. 
R. Flowers axillary; stem 5-angled. 
Lythrum in LYTHRACEAE (p. 259) 
RR. Flowers in clusters; stem terete. 
S. Stamens 5, on the receptacle; ovules 2 in each cell. 
LINACEAE (p. 244) 
SS. Stamens 10, on the calyx; ovules numerous. 
Saxifraga in SAXIFRAGACEAE (p. 195) 
KK. Flowers irregular. 
T. Flowers spurred at base. VIOLACEAE (p. 255) 
TT. Flowers not spurred at base. 
U. Leaves entire; petals 3; stamens 6—8; stigmas ]—2; style |; 
carpels 2. PPOLYGALACEAE (p. 244) 
UU. Leaves serrate; petals 2 or 4; stamens 5; stigmas 5, sessile; 
carpels 5. BALSAMINACEAE (p. 249) 
II. Ovary inferior. : 
V. Flowers in umbels or heads. UMBELLACEAE (p. 271) 
VV. Flowers neither in umbels nor in heads. 
W. Stem 5-angled; sepals and petals usually 6; flowers axillary. 
Lythrum in LYTHRACEAE (p. 259) 
WW. Stem terete; sepals and petals fewer; flowers usually clustered. 
X. Sepals 4; petals 4; stamens 2 or 4 or 8; style 1; stigmas | or 4. 
ONAGRACEAE (p. 260) 
XX. Sepals 5; petals 5; stamens 10; styles or sessile stigmas 2—4. 
Saxifraga in SAXIFRAGACEAE (p. 195) 
GROUP 19—Dicotyledonous herbs with alternate simple leaves and sympetalous flowers 
A. Ovary superior or mainly so. 
B. Corolla irregular. 
C. Leaves with stipules; corolla not 2-lipped; stamens 10. 
LEGUMINACEAE (p. 224) 
CC. Leaves without stipules; stamens 5 or fewer. 
