298 XXV. DiPTEROCARPE^. (W. T. Thiselton Dyer.) [Dipterocarpus. 



12. D, scabridus, Thwaites Enum. 34 ; leaves elliptic-oblong acuminate 

 base rounded margins ciliate, calyx-tube in fruit subglobose with distant 

 stellate hairs angles with undulate wings ^ in. wide reaching to the pediceL 

 A. DG. Prodr. xvi. 2, 612. 



Ceylon ; near Eatnapoora, Thwaites. 



Young branches, petioles, and the under surface of the midrib with appressed hairs. 

 Leaves about 7 by 2f-3 in., glabrous above, glabrescent beneath except on the midrib 

 and nerves, lateral nerves 12-15 pairs ; petiole f in. Fruit-wings (calyx-lobes) 4 by 1 in. 

 linear-lanceolate, obtuse. 



13. D. alatus, RooA. Sort. Beng. 42 ; Fl. Ind. iL 614 ; leaves ovate or 

 elliptic acute, calyx-tube in fruit globose angles with wings \ in. broad. 

 Wall. Cat. 953 y A. DG. Prodr. xvi. 2, 611 in pari. D. costatus, Gaertn.f. 

 Fruct. iii. 50, t. 187 (bad). D. gonopterus, Turcz. in Mosc. Bidl. 1863, 576 ; 

 A. DG. Prodr. xvi. 2, 612. Oleoxylon balsamiferum, WaU. Cat. p. 157. 



Chittagono, Bibma, Tenasserim, Andaman Islands.— Disteib. Siam. 



Young branches compressed, pubescent. Leaves 54 by 3 in., shining above, more or 

 less pubescent beneath, margins ciliate, lateral nerves 15 pairs ; petiole IJ in., softly 

 pubescent-hairy ; stipules pilose. Racemes about 7-floi)f ered. Calyx-tvbe in fruit 1 in. 

 diam., smooth, frnitwings (calyx-lobes) 4-5 by 1 in., linear-ovate or spathulate, obtuse, 



3 nerved , unenlarged lobes orbicular.-^Kanjin Gasrtner's figure is bad as is shown by 



Hamilton's speciinens in the Banksian Herbarium, from vphich it appears to have been 

 drawn ; bis specific name suits the drawing, but is inapplicable to the species, I have 

 therefore adopted Roxburgh's. 



14. D. incanus, Roxb. Hort. Beng. 42 ; Fl. Ind. ii. 614 ; leaves ovate 

 obtuse. W. <& A. Prodr. 84; A. DG. Prodr. xvi. 2, 611. 



Chittagohs, Soxburgh; Pegu, Kurz. 



Young parts and compressed branches softly hairy-pubescent. Leaves 6 by 4J 

 iu., thinly pubescent on both surfaces, margins ciliate, lateral nerves 12 pairs, pubescent 

 beneath ; petiole 2 in., softly pubescent. Calyst-tvhe (in flower) softly pubescent, strongly 

 wiiy'ged. 



15. "D.insi^ia.is, Thwaites Enum. ^i; leaves ovate apiculate base obtuse, 

 flowers subsesisile, calyx-tube in fruit narrowly ovoid, angles with wings 

 i in. wide mouth scarcely contracted, fruit-wings (calyx-lobes) with one 

 principal nerve. A. DC. Prodr. xvi. 2, 612. 



Cetlon ; Saffragam district, Thwaites. 



Young bran hes densdy pubescent ultimately glabrescent. Leaves 4-6 by 2J-3 in. 

 glabrous above, pubescent or glabrous on the nerves beneath, margins sinuate-crenate, 

 lateral nerves 11 pairs ; petiole i-f in., silky-pubescent, finally transversely rugose. 

 liacemes 3-5 flowered. Flowers\&vge. Petals 2i in. long, yellow on the inner, reddish 

 on the outer margin. Calyx-tube in fruit about 1 in. long ; immature fruit-vrings 

 (calyx-lobes) 2|-f in., hnear-oblong, obtuse. 



16. D. pteryg'ocalyx, Scheff. Obs. Phyt. ii. 35 ; leaves elliptic ovate or 

 oblong-ovate shortly and abruptly acuminate base truncate, calyx-tube in 

 fruit ovoid angles with wings nearly | in. wide fiiouth slightly contracted, 

 fruit wings (calyx-lobes) sub-3-nerved central nerve prominent. 



Malacca, Maingay. — Disteib. Banca. 



Young branches subcompressed with deciduous canescenoe. Leaves 4-10 by 3-9 in., 

 glabrous on both surfaces, margins sinuate-crenate and undulate, lateral nerves about 

 18 pairs, rather remote; petiole 2-3 in.; stipules pale, glabrous. Macemes about 

 5-flowered. Calyx-tuhe in fruit 2 in. long, glabrous ; fruit-wings 7 by 14-2 in., linear- 

 oblong, obtuse, unenlarged lobes broadly ovate or orbicular. 



