SPECIES OF CEDRELA . 
359 
As above stated, the present revision is principally based on a study 
of the specimens preserved in the Calcutta herbarium. But although I 
have thus had at my command the best materials at present available, 
it has unfortunately not been possible for me to settle; as fully as I 
hoped to be able to do, many points concerning the Indian Cedrelas. 
There are, for instance, in that rich collection several specimens which 
I should certainly have considered as specifically distinct from C. Toona, 
were it not that there are also various form's intermediate between them 
and the latter species. Moreover, some of these specimens are incom- 
plete and they seldom correspond to the same phases of vegetation. 
All this has greatly puzzled me for a long time, and I finally adopted the 
plan of adding to the type of C. Teona a rather lengthy series of varie- 
ties, instead of creating new species which would unavoidably have been 
founded on insufficient characters. Among the few new species described 
in this paper Cedrela Hainesii deserves a special mention on account of 
the presence of staminodes in its flowers. It is greatly to be desired that 
fruiting specimens of that species should be obtained, for it would be 
interesting to know if its seeds are winged at their upper end only as 
it is the case in C. sinensis and in C. serrata , the only other two 
Cedrelas the flowers of which are also provided with staminodes. 
a 
Key to the Indo-Malayan species . 
A. Flower containing 5 staminodes besides the 5 stamens. 
/. Column and ovary glabrous, calyx cupulate . 
t Leaflets of the adult tree entire or very 
sparingly denticulate at the edge — 
Adult leaflets glabrous on both 
surfaces . . . . i. j Unensis A. Juss. 
tt Leaflets of the adult tree serrate at the 
edge 
Adult leaflets glabrous on both surfaces. 
Anthers cordate at the base . 2. serrata Royle. 
Adult leaflets shortly hairy underneath. 
Anthers sagittate at the base serrata var. puberula 
C. DC. 
II. Column and ovary hirsute , calyx dialy - 
sepalous — ■ 
Adult leaflets glabrous on both sur- 
faces; entire at the edge . 3 Hainesii C. DC. 
