xxv. DIPTEROCARPE.E. (W. T. Thiselton Dyer.) 295 



Calyx in fruit with an obscure tube. 



/Estivation of the calyx subvalvate ; stamens 15 .... 4. VATICA. 

 ^Estivation of the calyx imbricate. 



Three or all the calyx-segments enlarged ; stamens 15-co, 



subulate-cuspidate 5. SHOBEA. 



Two caiyx-seginents enlarged; stamens 10-15, subulate- 

 cuspidate 6. HOPEA. 



Two calyx-segments enlarged ; stamens 15, with an obtuse 



appendage 7. DOONA. 



** Calyx scarcely enlarged in fruit, segments reflexed. 



Stamens lo-oo . 8. VATEKIA. 



Stamens 5 9. MONOPOBANDRA. 



1. DXFTEROCARFUS, Gsertn. f. 



Lofty trees, stellately pubescent or more or less clothed with fascicled 

 hairs. Leaves coriaceous, entire or sinuate-crenate, lateral nerves not quite 

 opposite, connected by marginal loops and transverse reticulations ; petiole 

 usually more or less tumid at the apex ; stipules large, valvate, enclosing 

 the terminal bud, finally caducous leaving an annular scar. Flowers large, 

 racemed, white or reddish. Calyx-tube free. Petals usually pubescent ex- 

 ternally especially on the outer margin. Stamens oo ; anthers linear, equi- 

 valved, aca ruinate. Ovary 3-celled ; style filiform ; ovules 2 in each cell. 

 Fruit nut-like, 1- rarely 2-seeded, inclosed in the accrescent calyx- tube, 

 free; wings 2, erect, tieed adnate to the base of the pericarp; cotyledons 

 large, thick, unequal ; radicle inconspicuous. DISTRIB. Tropical E. Asia ; 

 species about 50. 



* Calyx-tube in fruit without ribs or wings, 

 t Young branches glabrous or canescent. 



1. D. turbinatus, Gcertn. f. Fruct. iii. 51, t. 188 ; leaves ovate or 

 broadly lanceolate entire or sinuate-crenate acute base rounded, fruit-wings 

 5 by i in. linear-oblanceolate obtuse 3-riervecL Ham. in Mem. Wern. Soc. 

 vi. .iOO ; Roxb. Fl. lad. ii. 612 ; Corom. PL iii. 10, t. 213 ; Wall. Cat. 952 ; 

 A. DC. Prodr. xvi. 2, 607. D. laevis, Ham. I.e. 299 ; A. DC. I.e. D. indicus, 

 Redd. Forest Rep. 1864-5, 17 with tab. 



EASTERN BENGAL and EASTERN PENINSULA, from Chittagong and Pegu to Sincapore. 

 (Concan and Ceylon cult. ?) 



Young branches compressed. Leaves 5-12 by 2^-7 in. ; glabrous on both surfaces or 

 slightly pubescent, especially on the nerves and margins, lateral nerves 14-18 pairs ; 

 petiole lg-3 in.; stipules with dense stellate canescence, pubescent towards the apex. 

 Racemes 3-5-flowered. Flowers 3 in. diam. Calyx tube obconic, hoary-puberulous ; 

 in fruit 1 in. diam., sub-spheroidal, mouth contracted, unenlarged lobes deltoid-ovate. 

 Petals pinkish-white. Nut pubescent. The Gurjun oil tree. Kanyin. 



2. D. vestitus, Wall. Cat. 954; leaves elliptic obtuse at both ends, 

 margins sinuate-crenate and ciliate. 



TAVOX-, Gomez. 



Young branches compressed, clothed in every part except the glabescent upper sur- 

 faces of the leaves with stellate canescence. Leaves 7 by 5 in., margins undulate, 

 lateral nerves 15 pairs; petiole 1^ in. Racemes about 6-flowered. Calyx-tube obtusely 

 obconic ; lobes short, broadly deltoid, obtuse. I have seen no fruit. 



tt Young branches more or less Tiairy. 



3. D. obtusifolius, Teysm. in Miq. Ann. Mus. i 214; leaves broadly 



