Pachynocarpus.] - xx. dipterocarpace^. 249 



Leaves nearly obovate, very stiff; nerves very 



prominent (2) P. Stapfianus 



Calyx cupular of 5 corky ribs grooved down the 



back (3) P. verrucosus 



Calyx-lobes much shorter than the oval fruit . . (4) P. Wallichii 



Calyx-lobes very short, corky, recurved ; fruit long, 



conic (5) P. Ridleyanus 



(i) P. umbonatus Hook. fil. Trans. Linn. Sac. xxiii. 159, t. 22. 



Small tree 20 to 30 ft. tall. Leaves stiff, coriaceous elliptic to 

 elliptic-lanceolate, smooth above, reticulate beneath ; nerves 7 to 8 

 pairs, elevate beneath, 4 to 5 in. long, i to 2 in. wide ; petioles 

 •5 in. long. Panicle 4 in. long or more, mealy; pedicels slender. 

 Calyx mealy, lobes lanceolate acute. Petals -4 in. long, linear- 

 oblong, blunt, fleshy, white. Stamens 10 ; anthers broad, elliptic, 

 apiculate. Ovary adnate to calyx-tube ; style stout. Stigma 

 large, globose. Fruit i in. long and as wide ovoid, entirely covered 

 with the thick rough corky sepals adnate to the nut for more 

 than three-quarters of its length, cup obscurely lobed at the top. 

 Hab. Forests, stream-edges. Singapore. Malacca (Maingay). 

 Perak, Larut (Kunstler). Penang, Telok Bahang (Curtis). Lan- 

 kawi islands, Sungei Batu Asap (Haniff). Distrih. Borneo. 



(2) P. Stapfianus King, I.e. 136. 



A tree 80 to 100 ft. tall. Branchlets stout. Leaves stiffly 

 coriaceous, broadly elliptic or obovate-elliptic, beneath scurfy on 

 the nerves; nerves 10 to 13 pairs, oblique prominent, 5 to 8 in. 

 long, 275 to 4'5 in. wide; petioles '65 to i in. long. Flowers 

 unknown. Fruit on a woody raceme 2 to 3 in. long, globular 

 apiculate, i"25 in. through almost completely covered with the 

 5-lobed woody rugose calyx, dark mouse colour speckled with dark 

 brown. Hab. Pahang, K'luang Terbang (Barnes). Selangor, Bangi 

 station (Foxworthy). Perak, Goping (Kunstler). 



This is certainly closely allied to P. umbonatus Hook, fil, but the foliage 

 is much thicker and the nerves much more prominent. 



(3) P. verrucosus Ridl. Vatica verrucosa Burck, Ann. Jard. 

 Buitenz. vi. 232, t. 3 fig- S- 



Tree. Branchlets rather stout scurfy. Leaves thin coriaceous, 

 oblong, shortly blunt acuminate, base cuneate; nerves 10 or 

 more pairs slightly elevate beneath, reticulations conspicuous both 

 sides, 6"5 in. long, 2"5 in. wide; petioles "5 in. long. Panicles in 

 upper axils and terminal, 2 in. long, scurfy. Sepals broadly 

 triangular and connate less than half-way, as long as the style, 

 scurfy. Petals •$ in. long, linear-oblong, glaucescent outside, but 

 not mealy. Stamens 10 ; anthers elliptic. Ovary connate with 

 the calyx-tube nearly to tip; style short thick. Stigma oblong. 

 Fruit sub-globose, brown corky, 75 in. long and wide, the calyx 

 covering the nut except the tip in the form of a 5-lobed cup, the 

 lobes rounded on the back and at the tip, and grooved down the 



