N. 0. DIPTERR0CARPEAE. 159 



often filled with resin, rather unevenly distributed. Medullary 

 rays prominent, moderately broad, with a number of fine rays 

 between each pair of broad ones ; the distance between the 

 broader rays equal to or up to twice the transverse diameter of 

 the pores, the small rays passing through or round the pores'\ 

 (Gamble). Young branches compressed, glabrous or canescent. 

 Stipules 4-5in. long, greenish, tomentose. Leaves 10-18 by 5-14 

 in., cordiform, acute, base cordate or truncate, margins sinuate- 

 crenate, undulate ; lateral nerves, 15 pair ; petiole 4-5 in. 

 Racemes 5-6in., simple or 2-fid, 4-7-flowerecl. Flowers large, 

 rose-coloured ; petals l^in. long, tomentose outside. Fruiting 

 calyx-tube obovate, velvety when young, glabrous when mature, 

 between the segments produced into 5 sharp knobs. Calyx- 

 tube in fruit \\ by 1 in,, mouth contracted, wings 4-5 by lj-ljin., 

 linear-elliptic, obtuse, 3-nerved. Nuts tomentose. 



Use : — According to Mason, the oleo-resin of this tree is 

 used with assafoetida and cocoanut oil as an application for large 

 ulcers. 



138. D. alatus, Roxb. h.f.b.i., i. 298, Roxb. 439. 



Vern: — Garjan (B.); 



Habitat : — Chittagong. Andamans, Pegu, Tenasseriin, 

 Siam, Combodia. 



A very large tree with a grey bark. Sapwood white ; 

 heartwoocl reddish-grey, moderately hard, smooth, mottled 

 (.Gamble). Shoots and stipules pubescent. Leaves ovate or 

 elliptic, acute, pubescent beneath, margin ciliate ; secondary 

 nerves 12-15 pair, blade 4-6 in. Petiole softly hairy, 1-1 J in. 

 long. Wings on fruiting calyx-tube, broad, half the diameter 

 of the tube or more. Raceme about 7-flowered. 



The medullary rays consist of two classes of cells, long and 

 short. The former up to 0T2 in. long, are filled with wood oil. 



Use : — This species yields, like D. turbinates, most of the 

 Gurjun Balsam of commerce. 



139. I), incanus, Roxb. h.f.b.i., i. 298. Roxb. 

 439. 



