444 " Flora of the Malayan Peninsula. 



pedicels slender, short ; bracteoles triangular, minute ; flowers yellowish ; 

 buds linear-oblong. Calyx-tube adnate to the base of the ovary ; lobes 

 ovate rounded, glabrous, -6 in. long. Corolla-tnhe short, -1 in. long, 

 glabrous, except a ring of scanty refiexed hairs within near the base 

 below the insertion of the filament ; narrow raised folds between the 

 stamens; lobes oblong, cordate at base, folded in bud, rounded at 

 top, -15 in. long. Stamens inserted a little above the base of the 

 corolla-tube; pollen globose with small pits. Follicles very large, 

 on greatly thickened peduncles (-5 in. in diam.), 9 to 15 in. long, 



1 to 1-5 in. broad, after splitting open nearly 3 in. broad, connate 

 at the base, at first straight, but after dehiscence curved backwards so 

 as nearly to touch at the points. Seeds peltate, flat, elliptic, surrounded 

 by a membranous striate wing, broader at the ends than in the middle, 

 2-5 in. long, 1 in. broad, the seed part 1-25 by -75 in. ; testa thin, 

 granular-papillose; albumen thin; cotyledons ovate, •? by 4 in., very 

 thin and difficult to separate ; radicle short. Fl. Br. Ind. III. 644. 

 Alstonia ? costulata, Miq. El. Ind. Bat. Suppl. 556. 



Penang : Curtis 3391 ; Scortechini 1973 ; King's Collector 4689, 

 8181, 8784. Malacca : Griffith ; Maingay (K.D.) 1097 ; Derry 554. 

 Pahang : in Tahan Woods, Biclley in Trans. Linn. Soc. 2nd Ser. III. 

 320. SiNGAPOEE : Biclley 4922. — Disteib. Sumatra {Teysmann, 

 Diepenhorst 1114). 



This is the chief plant that gives the " Gutta Jelutong," which seems, however, to 

 be used only as an adulterant of the true Guttas given by species of Palaquium and 

 Payena. Beccari, in ' Nelle foreste di Borneo,' 561, says that the Gutta of the allied 

 Bornean species Dyera Loioii, Hook, f., is absolutely wanting in elasticity, and quickly 

 resinifies and becomes pulverulent. 



2. Dyera laxifloea. Hook. f. Fl. Br. Ind. III. 644 (1882). A very 

 large tree, reaching 100 to 150 feet in height and 3 to 4 feet in diam. ; 

 branches verticillate ; branchlets angular, furrowed, rugose, very thick, 

 dark brown. Leaves chartaceous, in whorls of 4 to 7 ; elliptic-obovate or 

 obovate, rounded or shortly acute at apex, rounded at base or especially 

 when young cuneate-attenuate ; upper surface bright green glossy, 

 lower glaucous ; margins slightly recurved ; 6 to 8 in. long, 2 to 

 3'5 in. broad; midrib prominent, depressed and keeled above, much 

 raised beneath; main nerves 13 to 17 pairs, starting at an angle of 

 about 60° with the midrib, and only very slightly curving upwards to 

 meet in a looped nerve at the margin, slightly impressed above, raised 

 beneath ; reticulations many, prominent on both surfaces ; petiole 1 to 



2 in. long, channelled, furnished at the base with a prominent gland, 

 which, especially those of the uppermost whorl, is recurved, hooked. 



