KEY TO THE FAMILIES 



Stamens 4-5: lvs. and bark with 



bitter taste 88. Simarubaceae 



59b. Arrangement of lvs. opposite. 



Lvs. pinnately compound, stipu- 

 late: fls. regular 97. Staphyleaceae 



Lvs. palmately compound, estipu- 



late: fls. irregular S9. Hippocastanaceae 



47b. Fls. irregular: fr. a capsule or drupe: 

 lvs. alternate. 

 60a. Lvs. simple. 



Shrubs or trees: fr. a drupe 101. Sabiaceae 



Herbs: fr. a capsule. 



Stout erect succulent annuals, to 



1 m. high 102. Balsaminaceae 



Stemless or slender branching per- 

 ennials, to 3 dm. high 113. Violaceae 



60b. Lvs. pinnately compound: trees: capsule 



bladder-like Koelreideria 



43b. Stamens united. 

 61a. Stamens 4-15. 



62a. Lvs. pinnately 1-3 x compound, estipulate: 



trees: fls. regular 89. Meliaceae 



62b. Lvs. simple: herbs, or low shrubs. 



63a. Fls. irregular: lvs. entire, estipulate: low 



shrubs 90. Polygalaceae 



63b. Fls. regular: mostly herbs. 



Lvs. entire; stipular glands often present. 85. Linaceae 

 Lvs. serrate or dentate; stipules pre- 

 sent, often deciduous. 



Stamens 5 Melochia 



Stamens 10-15 Corchoropsis 



61b. Stamens numerous. 



64a. Filaments united into a column surrounding 



the styles 107. Malvaceae 



64b. Filaments united at the base into 5 bundles. 



Lvs. alternate, serrate 106. Tiliaceae 



Lvs. opposite, entire 111. Guttiferae 



lib. Ovary inferior: surrounded by and united with the calyx or 

 receptacle. (27a, p. 11) 

 65a. Stamens numerous, more than 10. 

 66a. Stems without foliage lvs., fleshy, often spiny: fls. with 



many sepals and petals 118. Cactaceae 



66b. Stems with foliage lvs., succulent or woody. 



67a. Plants succulent, with broad alternate inequilateral lvs. 



and unisexual fls.: fr. a winged capsule 117. Begoniaceae 



67b. Plants woody. 



Lvs. wi}h stipules, alternate: fr. a pome 80. Rosaceae 



Lvs. without stipules. 

 Fr. a large leathery berry with seeds surrounded by 

 fleshy pulp: stems usually thorny: lvs. opposite 



or fascicled 122. Punicaceae 



Fr. a capsule: sepals and petals connate, falling off 



as a lid: aromatic plants: lvs. opposite 125. Myrtaceae 



65b. Stamens few, not more than 10. 



15 



