248 XX. DiPTEROCARPACEiE. [Balufiocarpus. 



blunt not contort. Stamens 15; filaments rather long slender, 

 base broad triangular narrowing to the tip; anthers linear with 

 a short point. Ovary glabrous with a long stylopodium ; style 

 long, filiform, long persistent. Fruit cylindric acute, 1-5 in. long, 

 •5 in. wide ; pericarp woody glabrous, dark yellow. Sepals forming 

 a cup '6 in. deep. Hab. Forests. Pahang, Temerloh and Bentong 

 (Foxworthy). Negri Sembilan, Bukit Pergai Triang (Foxworthy). 

 Selangor, Klang at Bukit Cheraka (Foxworthy). Perak, Thaiping 

 district (Kunstler) ; Kwala Kangsa (Foxworthy); Gapis (Wray). 

 Native names : Chengal Penak ; Penak Tembaga ; Chengal Siput. 



King's specimens of this and of B. Wrayi are only in fruit, but I have 

 little doubt on carefully comparing the foliage that Foxworthy's flowering 

 specimens belong to the same species. The only difference that I can see 

 between B. Heimii and B. Wrayi is that in the latter the leaves are smaller 

 and quite glabrous, whereas in B. Heimii the petiole and midrib usually are 

 puberulous or pubescent. Wray's specimens are in unripe fruit, and the 

 size of the leaves and amount of pubescence vary in B. Heimii. 



(7) B. maximus King, I.e. 133; Ann. Bot. Gard. Calc. v. (2), 

 159, pi. 192. 



Vast tree 100 ft. tall, glabrous except inflorescence. Leaves 

 thinly coriaceous, oblong or elliptic-oblong sub-acute, base rounded ; 

 nerves 7 to 9 pairs, 5 to 7 in. long, 2 to 2*5 in. wide; petioles '5 

 to '6 in. long. Panicles tomentose, 6 in. long. Flowers sub-sessile 

 •6 to '7 in. long, light yellow, calyx cream colour. Sepals ovate, 

 outer 2 tomentose. Petals much longer, narrow oblong, tip erose, 

 pubescent outside and on tip outside. Stamens 10 ; awn deflexed. 

 Fruit cylindrical acute; pericarp woody, 175 to 2*25 in. long, 

 •6 to 7 in. through. Sepals forming a toothed cup at base '5 in. 

 long. Hah. Dense forests. Johor, Gunong Pulai. Pahang, Kwala 

 Lipis at Sungei Benchah (Foxworthy). Perak, Batang Padang 

 district (Kunstler). Native name : Chengal Penak. Use : Tim- 

 ber highly valuable for building boats and for sleepers. Dammar 

 much valued, being quite transparent, for varnish, etc. 



14. PACHYNO CARPUS, Hook. fil. 



Small-sized to medium trees. Leaves coriaceous, rather thin 

 elliptic or oblong, reticulate. Panicles terminal or axillary, lax. 

 Calyx of 5 sepals, connate at base, small mealy. Petals much 

 longer, often mealy on the back. Stamens 10 to 15 in 2 rows, 

 very short ; anthers elliptic ; connective prolonged into a short 

 point. Ovary often sunk in calyx-tube; style short, thick. 

 Stigma oblong or sub-globose. Fruit corky brown, the persistent 

 sepals forming short corky processes or lobes attached to the nut, 

 and occasionally forming a cup almost covering the nut. Species 

 about 10, Siam, Malay Peninsula and islands to New Guinea. 



Calyx almost covering the nut in fruit. 

 Calyx cupular, not lobed. 



Leaves oblong ; nerves hardly elevate . . (i) P. umbonatus 



