Vatica.] xx. dipterocarpace^. 245 



base cuneate; nerves very fine, 7 pairs, -4 to 575 in. long, 1-25 to 

 1*75 in. wide; petioles slender, i'25 in. long, dilated towards the 

 apex. Stipules ovate-cordate obtuse, -25 to 75 in. long and nearly 

 as wide. Panicles lax, axillary, few-flowered. Flowers distant; 

 pedicels "2 in. long. Sepals short, ovate connate half their length 

 and sparingly inside, scurfy puberulous. Petals 4 times as long, 

 linear-oblong, scurfy on the back, not twisted. Stamens 10; 

 filaments very short ; anthers shortly apiculate. Ovary conic 

 pubescent grooved; style columnar. Stigma clavate. Fruit 

 unknown. Hab. Very rare. Malacca on Mount Ophir (Hullett 

 781). A very remarkable plant, quite unlike any other. 



12. ISOPTERA, Scheffer. 



Tree. Leaves coriaceous. Flowers in axillary and terminal 

 panicles. Calyx-tube very short. Sepals ovate-round, imbricate. 

 Petals linear, twisted. Stamens 30 to 35 ; anthers ovate ; cells 

 divergent at base; connective awned. Ovary 3-celled; cells 

 2-ovuled. Fruit, i-seeded; pericarp coriaceous; calyx an open 

 cup with 3 large round spreading lobes and 2 smaller ones. Species i. 



(i) I. borneensis Scheff. Ann. Bot. Jard. Buiienz. vi. 222; 

 King, I.e. 129. (Fig. 22 h, p. 212.) 



A large tree, but often flowering quite small. Leaves thinly 

 coriaceous, oblong sub-acute, base rounded, glabrous ; nerves 8 or 9 

 pairs, 4 to 5 in. long, 175 to 2 in. wide ; petioles "5 in. long. Panicles 

 lax, few-flowered, 4 to 6 in. long, stellate-pubescent. Flowers 

 pedicellate, i"25 in. across, green. Sepals tomentose. Petals 5 in. 

 long, tomentose. Stamens, filaments dilate at base. Ovary silky. 

 Fruit '25 in. through. Calyx forming a cup with 4 spreading lobes, 

 the outer ones "65 in. long and wide. Hah. In forests. Muar at 

 Kepong (Curtis). Pahang, river, woods; Tenjai, Ulu Rumpin 

 (Foxworthy). Disirib. Borneo, Banka. Native name : Senkawang 

 or Tengkawang. Use : Yields the valued vegetable fat, Minyak 

 Tengkawang. 



13. BALANOCARPUS, Beddome. 



Medium to vast trees. Leaves rather small. Flowers small, 

 secund on panicled racemes. Sepals distinct or connate at base, 

 2 external to the others. Petals elliptic oblique. Stamens 15 

 attached to petal-bases in 3 rows or 10 in 2 rows ; filaments dilate 

 at base; anthers ovate, awned. Style short. Stigma entire. Fruit 

 oblong or sub-globose; pericarp woody. Calyx forming a 5-lobed 

 cup round the base, free from it, not developing into wings. Species 

 about 12, South India, Malaya. Use : Timber highly valued, 

 Chengai. Dammar, very clear and transparent or black. 



Stamens 15. 



Flowers very small, glabrous and dark coloured 

 when dry. 

 Fruit small ellipsoid, base only covered by 



sepals ; flowers silky .... (i) B. penangianus 



