98 



serables D. alatiis, Roxb. ; but its flowers are shorter, the leaves are 

 more broadly ovate, and have rounded or cordate, not euneate, bases, 

 while the pubescence of the lower surface is paler and more uniform 

 and the young branchlets and leaf-buds are stouter. Moreover the 

 accrescent lobes of the calyx are longer and nearly twice as 

 broad : the 5 wings of the calyx-tube are also broader. Roxburgh's 

 description of his species D. incanus is veiy brief ; he left no drawing 

 of it at Calcutta ; and no authentic specimens of his own naming 

 appear to exist. It is therefore impossible to decide with absolute 

 certainty what Roxburgh's D. incanus is. At Kew Mr. Dyer accepts 

 Kurz's Pegu specimen No. 2109 as belonging to it, and the specimens 

 recently brought from the S. Andaman by my collectors agx-ee with 

 that number of Kurz's. 



13. DiPTEROCARPUs ALATUS, Roxb. Hort. Beng. 42 ; Fl. Ind. II 614. 

 A tree 80 to 125 feet high : young branches terete, rather stout, softly 

 and minutely pubescent; the buds nai-row, rufous-sei'iceous. Leaves coria- 

 ceous, ovate-elliptic, the apex acute, the base ciineate, the edges undu- 

 late : upper surface glabrous except the minutely tomentose nerves and 

 midrib : lower sparsely and minutely stellate-pubescent, the 10 to 14? 

 pairs of oblique rather straight prominent main nerves densely tomen- 

 tose ; length 5 to 8 in., breadth 2-75 to 4*5 in. ; petiole 1 to 1*5 in , 

 pubescent : stipules sericeous pubescent. Panicles 6- or 7-flowered. 

 Flowers about 1*5 in. long. Galyx-tuhe ob-conic, 5-winged, stellate-pubes- 

 cent, as ai'e the linear-oblong petals. Fruit globose, 1 in. in diam., 

 puberuloiTS, 5-winged from base to apex ; the wings glabrous, thin and 

 about 5 in broad ; the 2 accrescent lobes of the calyx linear-oblong, 

 obtuse, glabrous, much reticulate, 3-nerved in the lower half, 4*5 in, 

 long and "7 or "8 in. broad : the 3 unenlarged lobes obtuse. Wall. Cat. 

 953 : A. DC. Prod. XVI. 2, 611 in part : Dyer in Hook. fil. Fl. Br. Ind. 

 I, 298; Journ. Bot, 1874, p. 106 (excl. syn. D. costafns, Gtievtn.) Kurz 

 For. Flora Burm. I. 116; Pierre Flore Forest. Coch-Chine, t. 212. 

 OleoxyJun halsamiferum Wall. Cat p. 157. 



Bui-mah : Wallich, Brandis, Heifer No. 730, Kurz. Andamans ? 

 Gfertner's figure and description of his D. costatus are confined to 

 the fruit only. The former is that of a Dipt crorar pus with the elongat- 

 ed calyx-lobes of D. alaius, Roxb., but with the 5 wings on the tube of 

 tlie calyx very narrow, whereas those of Uoxburgli's D. alatus are 

 very broad. Dyer (F. B. I. i, 298) expresses his belief that Gaertner's 

 figure is a bad representation of D. alatus, Roxb., and he reduces 

 Gaertner's J), costatus to Roxburgh's D. alatus. M. De CandoUe, on the 

 other hand, retains D. costatus, Gaertu. as a good species and in 

 this he is followed by Kurz ; but Messrs. Dyer and De Candolle agree 

 390 



