1. Stelechocarpus. 



2. Sageraea. 



3. Cyathostemma. 



4. Uvaria. 



older branches or trunk ; ovules 6 to 

 8, or indefinite. 



Trees ; flowers 1 -sexual ; ovules 

 many ; torus conical or hemis- 

 pheric ... .., 

 Trees or shrubs ; flowers unisexual 

 or hermaphrodite ; ovules 6 to 8 ; 

 torus flat ... 

 Sepals valvate ; climbers. 



Flowers small, mostly hermaphrodite ; 

 petals incurved, ovules 6 to 8; torus 



IlStu ••• ••• ... 



Flowers usually large and from the leafy 

 branches, petals spreading ; torus flat. 

 Flowers 2-sexual ; ovules many 

 Flowers 1- or 2-sexual ; ovules so- 

 litary, rarely 2 ... ... 5. Ellipeia, 



Tribe II. Unone^. Petals valvate or open in bud, 

 spreading in flower, flat, or concave at the base 

 only ; inner subsimilar or 0. Stamens many, 

 close-packed ; their anther-cells concealed by 

 the overlapping connectives. Ovaries indefi- 

 nite. 



Flowers trimerous. 



Petals conniving at the concave base and covering the stamens 

 and ovaries. 



Ovaries 1-3, many-ovuled ; pedun- 

 cles not hooked 

 Ovaries many, 2-ovuled : peduncles 



hooked ... 

 Ovaries many ; ovules 4 or more ; 

 peduncles sti-aight ... 

 Petals flat, spreading from the base. 

 Ripe carpels indehiscent. 



Ovules many, 2-seriate ; petals 

 lanceolate, stamens with acute 

 apical appendage 

 Ovules 2-6, 1-seriate on the 



ventral suture ... 

 Ovules 1-2, basal or subbaaal... 

 Ripe carpels follicular 

 Flowers dimerous 



6. Cyathocalyx. 



7. Artabotrys. 



8. Drepananihiis. 



9. Canangium. 



10. Unona. 



1 1 . Polyalthia. 



12. Anaxagorea, 



13. Disepaluin. 



251 



