111(110). Leaves usually fleshy and succulent, simple, unlobed or usually so, 

 with entire or toothed margins 69. Crassulaceae, p. 994 



111. Leaves not succulent, usually deeply lobed or compound 



61. Ranunculaceae, p. 913 



i 12(109). Carpels numerous, crowded together to cover the prolonged floral 

 axis, cohering to each other and in fruit forming a fleshy or 

 rather woody conelike fruit, each folliclelike carpel opening longi- 

 tudinally by a dorsal slit and each carpel uni- or biovulate; trees 

 or shrubs 62. Magnoliaceae, p. 958 



112. Gynoecium and fruit not as in the Magnoliaceae (113) 



113(112). Flowers bilaterally symmetrical; petals 3, bilobed; stamens 5, each 

 filament with a scale and all 5 scales connivent over the stigma; 

 capsules explosively dehiscent 85. Balsaminaceae, p. 1105 



113. Character combination not as above ( 1 14) 



114(113). Flowers bilaterally symmetrical; lowermost petal spurred or gibbous; 



fruit a capsule with 3 valves and 3 parietal placentae 



92. Violaceae, p. 1151 



114. Character combination not as above (115) 



115(114). Embryo curved around the periphery of the roundish or disklike 

 seeds, surrounding the perisperm and/or endosperm (go back to 

 couplet 78). 



115. Ovules and seeds not as in centrospermous plants (116) 



116(115). Fertile stamens precisely as many as sepals and alternate with them 

 and/ or as many as petals and opposite them (117) 



116. Fertile stamens either more numerous than petals or sepals or if as few as 



petals or sepals then opposite the sepals and alternate with the 

 petals (119) 



117(116). Vines; fruit a several-seeded berry 86. Vitaceae, p. 1108 



117. Mostly trees, shrubs or herbs; fruit mostly drupes or capsules or (if vines) 



then fruit a drupe (118) 



118(117). Opposite-leaved herbs; capsule circumscissile (genus Anagallis of) 



102. Primulaceae , p. 1276 



118. Alternate -leaved plants; capsule not circumscissile....88. Sterculiaceae, p. 1125 



119(116). Fruit a specialized capsule completely divided into 2 cells by a thin 

 partition, each cell then with 2 placentae situated at the juncture 

 of the partition and the walls, at dehiscence the 2 valves separating 



from the persistent partition (starting at base) and falling free 



64. Cruciferae, p. 962 



119. Fruit not a silique or silicle ( 120) 



120(119). Leaves tubiform, basal, trumpet-shaped, dilated upward, to 7 dm. long, 

 partially filled with fluid, with a ridge on the adaxial side and 

 terminated by an expanded hood to 8 cm. long; stamens numerous 

 66. Sarraceniaceae, p. 990 



120. Character combination not as above (121) 



121(120). Rosettelike low nearly acaulous herbs; leaf blades usually rotund, the 

 margins with gland-tipped hairs that exude drops of clear glittering 



glutinous fluid; insectivorous by means of folding leaf blades 



67. Droseraceae, p. 990 



121. Character combination not as above (122) 



33 



