22 Family Key 
EE. Flowers in spikes or panicles; petals without pit; calyx 5-cleft; stamens 
on the calyx tube. Petrophytum in ROSACEAE (p. 206) 
DD.  Pistil only 1. ° 
F. Annual; leaves 2—6 mm. long, linear; petals 6; plants 2—5 cm. high. 
Canbya in PAPAVERACEAE (p. 173) 
FF. Annual or perennial; leaves longer, sometimes linear; petals rarely 6; 
plants mostly taller. PORTULACACEAE (p. 148) 
CC. Leaves not entire. 
G. Pistils more than |. 
H. Stamens on the receptacle; sepals distinct; stipules none. 
RANUNCULACEAE (p. 162) 
HH. Stamens on the calyx tube; sepals united at base; stipules present. 
ROSACEAE (p. 206) 
GG.  Pistil only 1. 
I. Leaves palmately veined; sepals distinct. MALVACEAE (p. 251) 
II. Leaves pinnately veined; sepals united at base. 
J. Stipules adnate to the petiole; stamens 5—10; stigma 1. 
Horkelia in ROSACEAE (p. 206) 
JI. Stipules none; stamens numerous; stigmas 3. LOASACEAE (p. 257) 
GROUP 18—Dicotyledonous herbs with alternate simple leaves and polypetalous 
flowers with few stamens . 
A. Peat bog plants; leaves all in a basal rosette, oblanceolate or spatulate, very con- 
spicuously glandular-hairy, red or reddish-green; leaf blades not over 2 cm. long. 
DROSERACEAE (p. 192) 
AA. Not peat bog plants; leaves not as above in all characters. 
B. ‘Two or more separate pistils to each flower. 
€. Leaves fleshy, pinnately veined or |-veined; pistils the same in number as the 
sepals or the petals. CRASSULACEAE (p. 193) 
CC. Leaves not fleshy, or if so palmately veined; pistils only rarely the same in 
number as the petals or the sepals. 
D. Leaves either coriaceous and evergreen or else peltate; stamens 5— 10; in- 
sérted on the calyx tube. SAXIFRAGACEAE (p. 195) 
DD. Leaves not coriaceous and evergreen, not peltate; stamens rarely 5 or 10, 
inserted on the receptacle. RANUNCULACEAE (p. 162) 
BB. Only | pistil to each flower. 
E. Leaves palmately veined. 
F. Plants with mustard or turnip taste; capsule linear; sepals 4; petals 4; 
stamens 6. CRUCIFERACEAE (p. 176) 
FF. Plants without mustard or turnip taste; pod not linear; sepals none or 5; 
petals 5; stamens 5 or 10. 
G. Flowers irregular; | petal spurred. VIOLACEAE (p. 255) 
GG. Flowers regular or nearly so; petals not spurred. 
H. Petals on the receptacle; ovary superior, 5-celled; flowers not in um- 

bels. Geranium in GERANIACEAE (p. 242) 
HH. Petals on the calyx; ovary superior or half inferior, 1—2-celled; 
flowers not in umbels. SAXIFRAGACEAE (p. 195) 
HHH. Petals on the ovary; ovary inferior, 2-celled; flowers in umbels. 
UMBELLACEAE (p. 271) 
EE. Leaves pinnately veined. 
I. Ovary superior. 
