XXIV 



INTRODUCTION 



n. Stamens and petals entirely free 



from the calyx 

 (y) Pistil 1 

 m. Stamens 5-12 



(m) Petals 6; shrubs 

 (n) Petals 5 ; herbs 

 n. Stamens many 

 (m) Woody plants 

 (n) Herbs 

 y. Pistil compound 

 (x) Woody plants 

 m. Vines with tendrils 

 n. Trees or shrubs 

 (m) Leaves simple 

 r. Style 1 

 s. Styles 2 



(r) Ovary superior 

 h. Ovary deeply 2-divided, 



winged 



i. Fruit a 1-celled capsule 

 (s) Ovary inferior; woody 



plants 

 t. Styles 3-5 



(r) Flowers white or pink 

 (s) Flowers greenish 

 (n) Leaves compound 

 r. Leaves opposite, pinnate 

 s. Leaves alternate 



(r) Flowers greenish; plants 

 often poisonous to the 

 touch 



(s) Flowers white or whitish 

 h. Leaflets 3 ; fruit winged 

 i. Leaflets many ; fruit fleshy 

 (y) Herbs 

 m. Plants fleshy 



(m) Plants leafless, spiny; petals 



many 



(n) Stems leafy, not spiny; petals 

 4-5 



RANUNCULACEAE 1 



BERBERIDACEAE 8 

 MIMOSACEAE 167 



PRUNACEAE 165 

 RANUNCULACEAE 1 



VITACEAE 211 



ERICACEAE 83 



ACERACEAE 217 



FRANKENIACEAE 42 

 SAXIFRAGACEAE 191 



MALACEAE 163 

 RHAMNACEAE 212 



ZYGOPHYLLACEAE 41 



ANACARDIACEAE 220 



RUTACEAE 40 

 MALACEAE 163 



CACTACEAE 207 

 CRASSULACEAE 188 



