Materials for a Flora of the Malayan Feninsula. 167 



pinnate, 3-4 in. long, rachis grey-silky ; leaflets 9-11 alternate, ellij^tic- 

 lanceolate, apex obtuse slightly emarginate, base widely cuneate, 1-1-25 

 in. long, •25-35 in. wide, cliartaceous, medium-green, glabrous and 

 sbining above, glaucescent and sparsely silkj-pubescent beneath ; lateial 

 nerves 4-5 pairs, quite invisible above and very faint beneath ; petio- 

 lules grey-silky, '2 in. long. Panicles tei-miiial, 5 in. long, 2'5-3 in. across 

 branches 1*5 in. long, pedicels '15 in. long slightly thickened under the 

 calyx ; all parts closely grey-silky. Galyx-i\xhe short conical ; sepals 5 

 slightly imbricate, ovate-lanceolate, margins of the inner slightly 

 narrower, recurved, all "15 in. long and silky-puberulous externally. 

 Petals 5, elliptic, white, one-third as long as sepals, half as long as 

 stamens. Stamens 5, filaments very short glabrous ; anthers distinctly 

 incurved, four to five times as long as broad, narrow-lanceolate. Ovary 

 compressed glabrous except for a few hairs at the base, 1-ovuled ; style 

 short. Pod not seen. 



Perak ; Goping, Scortechini 1996 ! 



This fine tree is known to the Malays as Tualang ; its timber is largely used for 

 building purposes. In tlds respect it resembles the preceding species as well as 

 another famous timber-tree from Borneo the Tapan {Koompassia excelsa Taub. 

 — Abauria excelsa Beccari). 



Frorji Signer Beccari's description of Tapan it is evidently a tree of much more 

 gigantic proportions than the Tualang. Its foliage is probably similar for its 

 leaflets are described as being of about the same size ; the number of leaflets to 

 a leaf Beccari does not state. But the flowers are very different for in Tapan the 

 petals are hardly shorter than the sepals and are about the same length as the 

 stamens, while the anthers are shorter than the filaments ; in Tualang the petals are 

 very small and the anthers are exceedingly long as compared with the filaments. 



46. DiALiUM Linn. 



Erect unarmed trees. Leaves odd-pinnate with more or less dis- 

 tinctly alternate leaflets. Flowers copious small obscure in ample ter- 

 minal patiicles. Calyx-tuhe very short; free segments lanceolate or 

 ovate lanceolate, subequal, much imbricated, deciduous. Petals (in all 

 Malayan species). Stamens 2, erect, included ; anthers attached near 

 the base, dehiscence longitudinal. Ovary sessile, 2-ovuled ; style 

 filiform stigma terminal. Pod firm, dry, indehiscent, oblong, l-seeded; 

 endocarp pulpy. Seed albuminous, embryo foliaceous, radicle straight. 

 Species about 15, cosmopolitan in the tropics, chiefly however in S.-E. 

 Asia. 



Leaves quite glabrous on both surfaces ; — 



Pods large, (firm), 1-5 in. long, strongly umbonate at 



apex ... ... .. ... ... 1. D. Kunstleri. 



167 



