26 SIR DIETRICH BRANDIS—AN ENUMERATION 
in shape, with 1-8 resin-ducts. In most species large mucilage- 
cavities in pith and cortex. 
A large well-marked genus, of which at present 64 species are 
known, which are found from Ceylon and the Western Peninsula 
of India to the Philippine Islands—viz., 2 in the Western Penin- 
sula, 5 in Ceylon, 27 in the Eastern Peninsula, 22 in Borneo 
and other islands of the Indian Archipelago, 8 in the Philippine 
Islands. Five species have a comparatively wide distribution, 
viz., Dipterocarpus pilosus, from Assam to Sumatra and Bangka; 
D. oblongifolius, Blume, and crinitus, Dyer, from the Malay Pe- 
ninsula to Borneo; D. Hasseltii, Bl., and grandiflorus, Blanco, 
from the Malay Peninsula to the Philippine Islands. For the 
present Mr. Dyer's arrangement (Journ. of Botany, 1874, p. 102) 
may be adopted. 
Sect. I. SPHÆRALES, Dyer. 
Tube of fruiting-calyx smooth. 
A. Ceylon and Western Peninsula. 
1. DIPTEROCARPUS INDICUS, Bedd. in Madras Forest Report 
(1864-65), 17, eum tab., et FT. Sylv. (1871) t. 94.—D. turbinatus, 
Dyer in Hook. f. Fl. Brit. Ind. i. (1872) 295, partim; Talbot, 
Trees Bombay, p. 17; non Gaertn. 
Evergreen forest on the ghats of North Canara (Talbot); ghats 
of South Canara (Bedd.) The origin of specimens at Kew 
marked Concan (Stocks) is doubtful. Travancore, Colatoorpolay 
(Lawson, n. 12). 
Closely allied to D. turbinatus, Gaertn. f., the distinguishing 
characters, so far as known at present, being the long petioles, 
2 to 4 length of blade, and the smaller number of secondary 
nerves, 10-15 only. 
In regard to the pubescence of young shoots and inflorescence, 
it varies in the same way as D. turbinatus. Mr. Lawson's spe- 
cimens from Travancore are perfectly glabrous. Until better 
specimens in fruit are available, it seems preferable to keep this 
species distinct. Eventually it may prove to be a local variety 
of D. turbinatus. 
2. D. niserpus, Th. Enum. Pl. Zeyl. (1859) 33; Dyer in 
[London] Journ. Bot. xii. (1874) 102, t. 143. fig. 14; Trimen, 
Fl. Ceylon, i. 114. 
Ceylon, moist low country. 
