Flora of the Malayan Peninsula. 443 



stipular ridges between the petioles. Inflorescence of pseudo-terminal 

 and axillary umbellately branched cymes ; flowers small. Calyx 5-lobed, 

 very small, eglandular ; tube very short, adnate to the base of the 

 ovary. Corolla hypocrateriform, 5-lobed ; tube short, hardly dilated 

 opposite the stamens; the throat naked; lobes 5, folded in bud and 

 overlapping to the left. Stamens 5, in the middle of the tube, included ; 

 filaments very short ; anthers oblong-ovoid ; cells small ; the connective 

 produced in a thickened terminal fleshy appendage. Dish annular, 

 obscure. Ovary 2-celled, short, entire, conic, obtuse at the top, which 

 is pubescent ; style none or minute ; stigma obpyriform, minutely bifid 

 at apex ; ovules many in each cell on intruded placentae. Fruit of two 

 cylindric follicular mericarps of very large size, connate at the base, at 

 first divergent, afterwards curling back and opening flat. Seeds elliptic, 

 large, flat, peltate, surrounded by a broad membranous striate wing, 

 longer at the ends than in the middle ; testa very thin, glandular- 

 papillose ; albumen flat, rather scanty ; cotyledons elliptic, very thin ; 

 radicle small, superior. — Disteib. Three species, of the Malay Penin- 

 sula and Archipelago. 



Leaves usually under 6 in. long, main nerves starting nearly 

 at right angles to midrib ; corolla-tube nearly as long as lobes ; 

 cymes with rather short peduncles .. .. ..1. D. coslulata. 



Leaves under 8 in. long, main nerves starting at about 60° with 

 the midrib ; corolla-tube very much shorter than lobes ; cymes 

 with long peduncles . . . . . . . . 2. D. laxiflora. 



1. Dyeea costulata. Hook. f. in Journ. Linn. Soc. XIX. 293 

 (1882). A very large tree, reaching 100 to 150 feet in height and 3 to 

 4 feet in diam. ; branches verticillate with reddish thick bark; branchlets 

 thick, angular and channelled, at any rate when dry. Leaves coriaceous, 

 in whorls of 6 to 8 ; broadly elliptic or elliptic-oblong, rounded and some- 

 times very shortly and abruptly acute at apex, rounded at base or some- 

 times attenuate ; upper surface bright green shining, lower pale bluish- 

 green glaucous, especially when young ; margins somewhat undulate, 

 slightly recurved ; 3 to 7 in. long, 1-5 to 3 in. broad ; midrib stout, very 

 prominent beneath, impressed and keeled above ; main nerves 16 to 20 

 pairs, at first nearly at right angles to the midrib, then curving upwards 

 to join in a looped nerve at the margin, raised on both surfaces when 

 dry, as are the prominent reticulations; petiole 1 to 1'25 in. long, ribbed, 

 furnished with a rounded cone-like gland on the upper surface at the 

 base, the glands of the uppermost whorl of leaves conniving in a cone 

 over the bud. Cymes pseudo-terminal, or from the penultimate leaf- 

 whorl ; peduncles of varying length, 1 to 3 in. long, rather slender 

 branches umbellately whorled ; secondary peduncles "25 to -5 in. long ; 



