560 OXT. EUPHORBIACE^. 



Stamens of the outer or only series alternate with the sepals, 

 or, if stamens all in the centre of (lower, the cells of the 

 2-3 (rarely 4)-carpellate ovary each 1-ovulate ; petals if 

 present often exceeding the sepals; inflorescence axillary 

 or terminal. 

 Petals present at least in the male flowers. 

 Inflorescence terminal. 



Flowers in androgynous 2-3-chotomous cymes ; 

 leaves usually digitately lobed ; stamens 



^ erect.. 18. Jatropha. 



Flowers in androgynous spikes or racemes; leaves 

 not digitately lobed ; stamens inflexed in bud 



with anthers reversed 19. Oroton. 



Male sepals imbricate in bud (open in 22, 

 Bimorphocalyx). 

 Male petals united; females with petals; 

 fruit a drupe ; a stellately tomentose 



tree 20. Givotia. 



Male petals free. 



Sepals of female flowers accrescent in 

 fruit. 

 Females without petals ; male petals 



shorter than the calyx 21. Blaciiia. 



Females with petals ; male petals 



longer than the calyx 22. Dimorpiiocalvx. 



Male sepals valvate in bud. 



Petals present in both sexes ; ghibrous 



shrubs 23. Agrostistaciiys. 



Petals of female narrow or ; hispid or 



stellately tomentose herbs 24. Ciirozopiiora. 



Petals in either sex. 



Male sepals 4-6, imbricate, free 25. Baliospermum. 



Male calyx closed in bud, usually membranous, split- 

 ting valvately into 3-5 concave sepals, the sepals of 

 females sometimes imbricate. 

 Styles distinct, usually long, entire, 2-fid, multifid 

 or papilloselj' fimbriate ; fruit capsular (rarely 

 drupaceous). 

 Filaments free. 



Anthers 2-celled, the cells united by their 

 bases only. 



Styles short, undivided 26. Claoxylon. 



Styles vei-y long, fimbriate or lacerate . 27. Acalypua. 

 Anther-cells oblong or globose, laterally 

 attached by a narrow or broad con- 

 nective. 



Stamens 4; styles plumose 28. AnENOCULiENA, 



Stamens many ; anther-cells 2. 



Leaves opposite ; flowers rather 

 large, dicecious ; anther - cells 



oblong 29. Trewia. 



Leaves alternate or opposite ; flowers 

 minute, monoecious or dioecious; 



anther-cellsglobo.se 30. Mallotus. 



Stamens many or few ; anthers 3-4- 

 locellate, the cells globose. 

 Styles very long with 2-3 filiform 



arms 31. Oleidion. 



Styles entire 32. Macaranoa. 



Filaments connate in bundles or branched ; 

 disk 0; fruit capsular; flowers dioecious, 

 tiio males and females in axillary or infra- 

 axillary s])ikes 33. HOMONOIA. 



