89 



Sepals of fruiting-caljx 



rotund, unequal (the inner 



two smaller), reflexed ... 8 Isoptera. 



Sepals of fruiting calyx much 



thickened and woody at the 



base. 



Calyx forming a cup at the 

 base of the fruit, but not 

 adhering to it : pericarp 

 woody ... ... 9 Balanocarpus. 



Calyx adherent to the fruit : pericarp 



thickly leathery ... ... 10 Pacliynocarptts. 



Sect. II. Ancistrocladej;. Ovary 1-celled with 

 a single ovule ; stigmas 3, distinct : Seeds 

 with copious ruminate albumen. Exstipulate 

 climbers. ... ... ... ... 11 Ancistrocladtis. 



1. DiPTEROCARPUS, Gasrtn. f. 



Lofty trees, stellately pubescent or more or less clothed with 

 fascicled hairs. Leaves coriaceous, entire or sinuate-crenate; lateral nerves 

 connected by marginal loops and transverse reticulations ; stipules large, 

 valvate, enclosing the terminal bud, finally caducous and leaving an 

 annular scar. Flotvers large, white or reddish. Calyx-tube free. Petals 

 usually pubescent externally, especially on the outer margin. Stamens 

 00 ; anthers linear, cquivalved, acuminate. Ovary 3-celled ; style filiform ; 

 ovules 2 in each cell. Frrdt nut-like, 1-seeded, enclosed in the accres- 

 cent calyx-tube, free ; accrescent calyx-lobes 2, erect. Seed adnate to 

 the base of the pericarp ; cotyledons large, thick, unequal ; radicle 

 inconspicuous. — Distrib. Tropical E. Asia ; species about 60. 

 Ripe fruit sphaeroidal or ellipsoidal, neither angled nor winged. 



Young branches, petioles, under surfaces of the midribs, and 

 nerves of the leaves covered with coarse stiff fasciculate hairs. 

 Fruit glabrous ... ... ... I. D. crinitus. 



„ stellate-pubescent ... ... 2. D. Scortechinii. 



Young branches deciduously pubescent. 

 Leaves with 12 or more pairs of nerves. 

 Leaves oblong-elliptic, their under sur- 

 faces sparsely stellate-pubescent ... 3. D. Skinneri. 

 Leaves elliptic or ovate-elliptic, theii' 

 under surfaces puberulous or quite 

 glabrous ... ... ... 4 D. inrbinatus. 



381 



