•2b0 



FLORA OF JAMAICA 



Inflorescence paniculate. 



Calyx imbricate. Shrubs or herbs 18. Jatropha. 



[Calyx valvate. Trees Aleurites.] 



Flowers in clusters 19. Acidocroton. 



Perianth single, the calyx. 



Inflorescence spicate or racemose, axillary. 



Bracts ovate-lanceolate, without glands. 



Male calyx closed in bud, splitting valvately. 



Styles free or very shortly united at base. 



Anther-cells crosswise 4-globose. Styles 



much divided 10. Bernardia. 



Anther-cells oblong, contiguous, 

 parallel. 



Shrubs. Male inflorescence usually 



unbrauched. Styles 3 12. Lasiocroton. 



Trees. Male inflorescence much 



branched. Styles 2 13. Alchornea. 



Anther-cells free, hanging from the 

 apex of the filament. Styles usually 



with many branches 14. Acalypha. 



Male sepals valvate. Styles united below, 

 undivided. 



Stamens numerous. Shrubs or trees .. 15. Acidoton. 

 Stamens 3-1. Twining herbs with 



stinging hairs 16. Tragia. 



Male sepals slightly imbricate. Anthers 

 opposite the sepals, sessile, 4-celled. 



Stigmas sessile, 2... 20, Tetrorchidium. 



Flowers several on reduced cushion-like leafy 



shoots 11. Adelia. 



Inflorescence ; clusters of sessile or stalked 

 flowers in the axils of much smaller upper 

 leaves, not reduced to bracts, without glands 21. Chxtocarpus. 

 Inflorescence racemose or paniculate, terminal 

 or in upper axils. Bracts without glands. 

 Male flowers below, female several together 

 above. Stamens very numerous, fila- 

 ments much branched 17. Ricinus. 



[]\lale flowers above, female several together 



below. Stamens 10 Manihot.'] 



Inflorescence paniculate, at apex of branches, • • . 



flowers several together in the axils of leafy 

 2-glandular bracts, female solitary here and 

 there amongst the numerous male flowers ... 22. Omphalea. 

 Inflorescence spicate, axillary or terminal. 

 Bracts broad, truncate, generally 2-glandular. 

 Male sepals distinct. Spikes terminal or 



axillary 23. Dendrocousinsia. 



Male calyx lobed. 



Filaments free. Spikes axillary 24. Sapium. 



Filaments united. Spikes terminal. 



Stamens 3. Ovary 3-celled 25. Grimmeodendron. 



Stamens 2. Ovary 6-9-celled 26. Hippomanc. 



Perianth of male flower wanting, or rudimentary, 

 consisting of a more or less complete rim, of the 



female flower cup-shaped 28. Hura. 



Perianth wanting in male and female flowers 27. Gymnanthes. 



