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Seeds flat. 

 Fruits depressed-globose, leaves 



bullate and pellucid ... ^,P. Gardneri. 



Fruit globose-ovoid, nervation 



not pellucid ...//J>. qiiftsita. 



Seeds wedge-shaped. 



Nervation closely reticulate, 

 fruit-calyx thin and flat ...4-D. Toposia. 



Nervation wider mesh, fruit- 

 calyx woody and cup- 

 shaped ... ...P. Ebeimin. 



Leaves small, 50-120 mm. long. 

 Leaves and fruits covered with very 

 long hairs ... ..4 P. prnriens, 



Leaves and fruits glabrous. 



Veins and calyx segments in- 

 conspicuous, seeds deeply 

 grooved ... ../#- D. oocarpa. 



Veins and calyx segments con- 

 spicuous, seeds superficially 

 striated ... .../, I), ovalifolia. 



ENDOSPERM RUMINATE. 



Male corolla urceolate, seeds small 

 and rounded ... ..A I), sylvatica. 



Male corolla tubular, seeds wedge- 

 shaped or flat. 



Leaves large, 100-300 mm. long. 

 Fleshy, veins not prominent, 



bark thick* .../< P. Ittooiiii. 



Coriaceous, veins prominent, 



bark thin and scaly ...ly.I). insilris. 



