OF THE DIPTEROCARPACE.&. 135 
calls short; but with reference to other Dipterocarps they can 
hardly be called short. (2) Blanco speaks of the ovary as free 
and stipitate, to which Blume has already drawn prominent 
attention. (3) Blanco describes the fruit as 3-seeded. - Ripe 
fruit is unfortunately not available; in its unripe condition there 
is every indication of one ovule only coming to perfection. It 
must be supposed that Vidal had other reasons for identifying 
this species with Vatica Mangachapoi of Blanco. 
No. 73 Vidal, which he quotes as Vatica sp. (?), is Anisoptera 
Vidaliana, Brandis. 
13. Pacnynocarrus, Hook. f. 
Leaves thickly coriaceous ; tertiary veins always reticulate, 
Flowers pedicellate, in compound terminal and axillary panicles, 
the lowest flower of a branch often apparently terminal. Calyx 
hairy inside and outside; petals linear, much longer than calyx, 
pubescent outside. Stamens 15 (occasionally 10) ; anther-cells 
obliquely adnate to fleshy connective, this prolonged upwards into 
a short point, and downwards into a thick short filament. After 
the pollen is shed, the valves of the anthers resemble four 
spreading thin membranous wings. Ovary slightly immersed 
in receptacle; style ribbed; stigma broad, bearing numerous 
papille which often are massed in three more or less distinct lobes. 
Fruit globular, verrucose ; walls thick, hard, spongy. Segments 
of fruiting-calyx equally enlarged and thickened, in most species 
coalescing with the pericarp, and almost completely enclosing 
the fruit. Pericarp and calyx-segments adnate to it, thick, of a 
hard spongy texture, with numerous resin-cavities. —Pericarp 
splitting into segments when ripe. Cotyledons fleshy; cells 
filled with starch and fat, radicle short. 
So far as known, the anatomical structure of Pachynocarpus 
agrees with that of Vatica. 
Five species—two in the Eastern peninsula, two in Borneo, 
one in Bangka. 
1. P. umponatus, Hook. f. in Trans. Linn. Soc. xxiii. (1862), 
159, t. 22.—Vatica umbonata, Burck in Ann. Jard. Buitenz. vi. 
(1887) 232.— PI. III. fig. 25. 
Borneo (Motley; Barber; Beccari, nn. 1104, 3278, 3942; 
Haviland, n. 1903). 
