612 POLYANDRIA MONOGYNIA. Dipterocarpus. 
will I think justify their being considered three very 
well defined genera, provided we admit that the Mono- 
phyllus and polyphyllus, calyx and corol ought to con- 
stitute genera, even though they agree in the rest of the 
character and habit. 
1. D. turbinatus. Gert. Sem. 3. t. 188. 
Spikes axillary, drooping. Leaves ovate-oblong, glossy. 
and ribbed. Body of the calyx without wings, or angles. 
Anthers thirty, bristle-pointed. 
Beng. Tileeya-gurjun about Tipperah and Chittagong 
A native of Chittagong, Tipperah, Pegue, &c. to the 
eastward of Bengal, where it grows to be an immense tree. 
Flowering time the beginning of the hot season ; the seed 
ripens in June. 
Trunk straight throughout, to the very top of the tree, 
and growing to an immense size, even so large as to be 
made into canoes that will carry an hundred men. Bark 
deeply cracked. Branches, the inferior ones spreading, 
the superior ones ascending. Branchlets bifarious. Young 
‘shoots hoary, and marked with scars of the fallen stipules- 
Leaves alternate, short-petalled, bifarious, ovate-oblong, 
‘some entire, some waved, and some are even serrate OF 
dentate, smooth on both sides, of a deep shining, glossy » 
green. Veins many, straight, simple and parallel, neatly 
as in Dillenia indica ; from four to twelve inches long. 
Stipules within the leaves, very large, sword-shaped, 
downy, caducous. Spikes axillary, drooping, solitary, 
shorter than the leaves, smooth. Jowers solitary, remote, 
alternate, large, white, with a. very slight tinge. of red. 
Calyx one-leayed ; tube rather gibbous. Border five-part 
ed, irregular; two of the divisions being much larger than 
the other three, and continuing to increase till the seed is 
ripe. Petals five, narrow, obliquely wedge-shaped, an 
on both sides, and entire, except that sometim 
seas emarginate. Ribaments about thin, short, inserted 
