Dipterocarpus .] xx. dipterocarpace^e. 217 
elevate, 6 to 9 in. long, 3'5 to 5 in. wide; petioles 2 to 3 in. long. 
Racemes 4-flowered. Flowers 2 in. long. Calyx-tube *5 in. long, 
angled with 5 wings for the whole length. Petals linear-oblong, 
pink, backs mealy 1 in. long. Fruit oblong 2 ’5 in- long with 5 
strong wings, '5 in. wide running the whole length; sepaline wings 
oblong blunt, coriaceous, 7 to 9 in. long, i'5 to 2 in. wide; nerves 
3 to 5, much-branched, small wings ovate orbicular, *5 in. long. 
Hab. Common in forests in the whole peninsula from Johor to 
Kedah (on Kedah peak) and Pulau Adang. Distrib. Lingga, 
Labuan, Bangka, Philippines. Native names : Minyak Keruwing 
Dadek; Minyak Keruwing Beku; Minyak Gombang Kechil. 
Use: Oil used in varnish (Rich. Journ. Roy. /Is. Soc. S. Br. xxxiv. 
P- 93 )- 
(9) D. Kunstleri King, l.c. 96; Ann. Bot. Gard. Calc. v. (2), 
149, pi. 180. 
A tree 100 to 120 ft. tall, and 2 or 3 ft. through. Branchlets 
at first pubescent, later glabrous with pubescent rings above each 
axil. Leaves coriaceous elliptic shortly acuminate, base round or 
cuneate, edges undulate, glabrous; nerves 16 to 18 pairs promi¬ 
nent, 7 to 11 in. long, 4*5 to 7 in. wide; petioles 1-5 to 2 in. long. 
Panicles 6 to 8 in. long. Branches 2 from a peduncle 1 in. or more 
long. Flowers 4 to 6, glaucous, 2'5 to 3 in. long. Calyx-tube 
obconic with 5 ridges. Petals linear blunt. Fruit dark bluish 
green 2'5 in. long, 1 in. through with 5 low wings in the upper 
part about *25 in. wide. Sepaline wings 6 in. long, 1*5 in. wide, 
oblong, narrowed at base; nerves 3 branched and reticulate, 
short wings obovate *5 in. long. Hab. Dense jungle, Perak, 
Thaiping Hills at 300 ft. altitude (Kunstler). 
(10) D. rigidus Ridl. Journ. Roy. As. Soc. S. Br. 82, p. 171. 
Branches stout, densely softly hairy. Leaves rigid coriaceous, 
ovate sub-acute, base shortly narrowed blunt, above glabrous, 
beneath velvety; nerves 10 to 11 pairs, sunk above, strong elevate 
as is midrib beneath hairy, 6 in. long, 4 in. wide; petioles 2 in. 
long, hairy stout. Panicles 4 in. long, glabrous above. Flowers 
large. Calyx-tube distinctly but narrowly winged, x in. long, 
lobes velvety outside, glabrous inside, short wing oblong blunt, 
•12 in. long, long wing blunt linear-oblong 75 in. long. Petals 
linear-oblong, grey velvety both sides 2 in. long. Hab. Johor, 
Penyabong (Foxworthy). 
Nearest to D. Kunstleri, but much more hairy and with fewer nerves to 
the leaves. 
(11) D. costatus Gaerin. Fruct. iii. 50, t. 187. 
A tree 60 to 70 ft. tall. Young branches golden velvety. 
Leaves oblong-ovate acute, base very shortly narrowed, thinly 
hairy to glabrous except the nerves pubescent above, all pubescent 
beneath; nerves 12 pairs elevate, 5 in. long, 275 in. long; petioles 
