117 



I Staminate flowers without petals. 4 

 2 Stamens united in a central column. 3 

 2 Stamens free. Calyx 5-parted. Petals 5, clawed. Croton. 



3 Stamens 10, petals longer than calyx. Jatropha. 



3 Stamens 5, petals short. Cluytia. 



4 Stamens many. 5 



4 Stamens few (seldom more than 20). 6 



5 Stamens polyadelphous, filaments branched. RiciNUS. 



5 Stamens monadelphous. Flowers enclosed in 2 



leafy bracts. Dalechampia. 



5 Stamens free. Flowers dioecious. Sepals 2-4, 



valvate. Claoxylon. 



5 Stamens free. Flowers dioecious. Sepals 5, im- 

 bricate. Gelonium. 

 6 Ovary 2-ceUed, capsule 2-coccous. 7 

 6 Ovary 3-4-celled, capsule 3-4-coccous. 9 

 7 Tree with large, rounded petiolate leaves. Mallotus. 

 7 Slender herbs. 8 

 8 Stamens 4-7. Flowers racemose. Leaves alternate. Leidesia. 

 8 Stamens 2-3. Flowers cymose or paniculate. Leaves 



alternate. Seidelia. 



9 Stamens 1-8. 10 



9 Stamens 8-16. 11 



10 Male perianth 3-parted, female 3-8-parted, pectinate- 



pinnatifid. Tragia. 



10 Perianth 3-fid, or parted. Trees or shrubs. Excgecaria. 



II Styles 3, divergent, multifid, coloured. Acalypha. 

 11 Styles 3, deeply 2-fid. Adenocline. 



B. BIOVULATE, 



Flowers with petals. Calyx 5-fid. Trees. 

 Flowers without petals. 



1 Stamens many, united in a central column sur- 



Bridelia. 



