REVISION OF DRYOBALANOPS AND DIPTEROCARPUS. 101 
utrinsecus crebris; petiolo semipollicari. -Panicula ad 8 poll. 
8) ; fig. 11, horozontal 
ary, and fig. 12 throug dys: hes (both x16).] » 
DrereRocaRPus. 
(Pt. 143-145.) 
The discovery of this remarkable genus is due to Dr. Buchanan 
H: gta In the memoirs of the Wernerian Society he remarks 
and it was 
these probably, that Gartner took his figures and descriptions of the 
Dipterocarpus costatus and D. turbinatus Hamilton, therefore, had 
no choice but to adopt (1825) what he considered without any very 
ay Fe reason to be ‘‘the barbarous generic name given by Geertmer is 
1805. Meanwhile Roxburgh had published (1814) the names of | 
poll additional species in the ‘‘ Hortus Bengalensis” (p. 42), and in 
1823 Blume had described two of the species peculiar to the Malayan 
elago in the “ Cat. Hort. Buit.” and two others (in 1825) in 
his “Bijdragen.”? Since then new species have been continually 
added to the genus, and though there are probably fewer new ones to 
be expected, since Beccari og ascert rtained the small extent to which 
the whole ny is represented in New Guinea, no doubt many still 
ee = be described. 
arium Kune of species of Dipterocarpus are rarely 
complete, Generally they consist of examples of the foliage 
and detached fruits picked up from the ground beneath the very 
lofty trees. In the absence of satisfactory materials in the majority 
case: I hav 
follow the method of Alphonse De Candolle, and ge ify the species 
according to the form of the fruit, ee Iamn oases meme 
oS Easte The species range on est from Assam 
through Eastern Bengal to Ceylon. Eastward the extend through 
urma, Siam to Cambodia and the aera uthward they are 
through the Straits if  Macassar, 
