99 



that the D. costatus described by Roxburgh is a different plant frora 

 Gaertner's. For Mr. Dyer it is still a doubtful s])ecies ; while M. De 

 Candolle reduces it to D, angustifolius W. & A., which for Dyer is in its 

 turn a doubtful species. A careful examination of the raatei'ial now 

 collected at Calcutta and at Kew leads me to believe that D. costatus, 

 Gaertn., 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 Barmah by Kurz (No. 113 of 

 his Herbm.) 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 B. costatus, Gaertn., is anything 

 else than Gaertner's plant. Mr. Dyer (Journ. 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. 

 alatns, Roxb. 



It is very doubtful whether D. alatus, Roxb., occurs in the Anda- 

 mans. I have seen no specimens of it from these islands, and I give it 

 as an Andaman plant on the authority of the " Flora of British India." 



Besides the preceding, there are various other species of Bipterocarpus 

 in the Calcutta Herbarium frora localities within the British Malayan 

 region which, for want of sufficient materials, I am unable to desci'ibe. 

 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 numbei') by fruits resembling those of B. Loivii H., f., B. intri- 

 catus, Dyer, and B. laincllatus, Hook. fil. 



(3) A species frora the Andaman s with leaves resembling those of 

 B. Griffitliii, Miq., but with globular fruit which has neither angles nor 

 wings on the calyx-tube. This possibly may be a form of B. pilosus, 

 Roxb, 



(4) A Perak species (Herb. Scortechini mixed with No. 1478) re- 

 presented by fruits something like those of B. fagineus, 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 B. fagineus, Vesque, and B. gracilis, Bl., but 

 differing from both. 



(6) A species from Perak (Wray No. 4031) having leaves like 

 B. Griffithii, Miq., but with shorter petioles, and having also fruit rather 

 like B. Griffithii, but the calyx-tube with narrower wings, and the 

 minor calyx-lobes smaller. 



391 



