!'!> 
that the D. contains described by Roxburgh is a different plant from 
Gaertner's. For Mr. Dyer it is still a doubtful species ; while M, De 
Candolle reduces it to D. august if alius W. & A., which for Dyer is in its 
turn a doubtful species. A careful examination of the material now 
collected at Calcutta and at Kew leads me to believe that D. costatus, 
Gaertn. T is a perfectly good species, and that the best character to 
distinguish it from Roxburgh's D.alatns is the narrowness of the wings 
of the calyx-tube. Specimens collected in Burmah by Kurz (No. 113 of 
his Herbra.) and by Brandis, have fruits exactly like that figured by 
Gaertner. Moreover I see no reason for thinking that the tree describ- 
ed by Roxburgh (Fl. Ind. II; 614) as D. costatits, Gaertn,, is anything 
else than Gaertner's plant. Mr. Dyer (Jonm. Bot. 1874, p. 153) ex- 
presses the opinion that D. Lemeslei, Vesque — a species collected on the 
island of Pulo Condor off the Cambodian coast — is reducible to D, 
alains, Roxb. 
It is very doubtful whether D. alains, Roxb., occurs in the Anda- 
mans. I have seen no specimens of it from these islauds, and I give it 
as an Andaman plant on the authority of tho M Flora of British India." 
Besides the preceding, there are various other species of Dipterocarpus 
in the Calcutta Herbarium from localities within the British Malayan 
region which, for want of sufficient materials, I am unable to describe. 
Chief amongst these are 
(1) Curtis No. 1560 from Penang, a species with winged calyx-tube. 
(2) A species from Perak, represented in Scortechini's collection 
(without number) by fruits resembling those of D. Lowii H., f, D. intri- 
catus, Dyer, and J), lamvllatns, Hook. fil. 
(3) A species from the Andamans with leaves resembling those of 
J). (rrij}Wiii t Miq., but with globular fruit which has neither angles nor 
wings on the calyx-tube. This possibly may be a form of D. pilosus, 
Roxb. 
(4) A Perak species (Herb. Seortechini mixed with No. 1478) re- 
presented by fruits something like those of D. fag-imus, Vesque, but 
with the calyx-tube winged, not angled. 
(5) A Perak species represented by leaf-twigs and loose fruit of a 
species resembling both D. fagineus, Vesque, and D. gracilis, BL, but 
differing from both, 
(6) A species from Perak (Wray No. 4031) having leaves like 
D. GrijJitJiii, Miq., but with shorter petioles, and having also fruit rather 
like D, Qrijjithii, but the calyx-tube with narrower wings, and tho 
minor calyx-lobes smaller. 
:jy] 
