rs solitary, either terminal or axillary --199.

198b. Flowers in terminal clusters --201.

199a. Calyx concealed by 2 bracts =CONVOLVULACEAE=, p. 91.

199b. Calyx not completely concealed by bracts --200.

200a. Ovary inferior, appearing as a swelling below the calyx at
the base of the flower, 3-celled; stigma 3-lobed
=CAMPANULACEAE=, p. 112.

200b. Ovary superior, located in the center of the flower
=SOLANACEAE=, p. 100.

201a. Some or all filaments hairy --202.

201b. Filaments not hairy --203.

202a. Leaves lobed or divided =HYDROPHYLLACEAE=, p. 93.

202b. Leaves not lobed 2, in =SCROPHULARIACEAE=, p. 101.

203a. Anthers close together, longer than the filaments
2, in =SOLANACEAE=, p. 100.

203b. Anthers separate from each other --204.

204a. Leaves compound or very deeply lobed --205.

204b. Leaves simple or with shallow lobes only --206.

205a. Leaf-segments linear or oblong, irregular
=HYDROPHYLLACEAE=, p. 93.

205b. Leaves truly compound with separate leaflets
1a, in =POLEMONIACEAE=, p. 92.

206a. Flowers greenish-yellow =SOLANACEAE=, p. 100.

206b. Flowers blue, violet, white, or intermediate tints
=CAMPANULACEAE=, p. 112.

207a. Leaves simple =ERICACEAE=, p. 84.

207b. Leaves compound =OXALIDACEAE=, p. 64.

--208--

208a. Petals 4 --209.

208b. Petals 5 --212.

208c. Petals 6 or more --227.

209a. Stamens 4 or 8 --210.

209b. Stamens 6, 4 long and 2 short =CRUCIFERAE=, p. 42.

209c. Stamens 9 or more =CAPPARIDACEAE=, p. 47.

210a. Leaves compound =ROSACEAE=, p. 51.

210b. Leaves simple --211.

211a. Ovary 1, inferior, appearing as a swelling below the calyx
=ONAGRACEAE=, p. 78.

211b. Ovaries 4 or 5, in the center of the flower
=CRASSULACEAE=, p. 48.

212a. Stamens with good anthers 5 --213.

212b