IN CEYLON. 
201 
Leaves 35-1S0 mm. long. 
Mature fruit hairy ... D. Iiir.sutil. 
Mature fruit glabrous or 
nearly so. 
* Fruit-calyx much en¬ 
larged and woody, 
t Leaves oblong-oval, 40-90 
mm. long, feebly pel¬ 
lucid venation ... D. affinis. 
tt Leaves with acuminate 
apex, 50-130 mm. long, . 
pellucid venation ... D. crumenata. 
** Fruit-calyx not much 
enlarged nor woody, 
f Fruit globose,35 mm.high, 
leaves broadly oval ... I). Melanoxylon. 
ft Fruit broadly ovoid, 25 
mm. high, leaves 
narrowly lanceolate ... D. Thwaitesii. 
Seedling and Fruit Characters. 
The following key has been constructed mainly from 
characters of the seeds and seedlings. In several instances 
the number and behaviour of cotyledonary traces would 
have been of service, but as such characters cannot be used 
outside the laboratory those of the fruit have been included 
as being of more practical importance in determining the 
identity of species in the forest. 
Endosperm equable. 
Cotyledons persistent. 
Seeds flat, thin (2 mm.) ... D._Gardneri. 
Seeds wedge-shaped. 
Fruit-calyx large, woody, seg¬ 
ments acute, first epicotyledon- 
ary leaf small, only 2 mm. long D. Ebenmu. 
