100 G. King — Materials for a Flora of the Malayan Peninsula. [No. 1 
Leaves with pinnate nervation. 
Ovary 3-ridged... ... ... 1. 
Ovary 5-ridged. 
Leaves with 6 or 7 pairs of nerves... 2. 
„ „ 3 or 4 „ ... 3. 
Ovary 10-ridged ... ... 4. 
Leaves boldly 5-nerved at the base, lateral 
nerves from the central nerve (midrib) 
3 pairs ; 7 to 14 in. long ; ovary 5-ridged... 5. 
Leaves boldly 8-nerved at the base; the 
central nerve (midrib) with 1 or 2 pairs of 
lateral nerves : rarely more than 7 in. long. 
Ovary not visibly ridged ... ... 6. 
Ovary 8 or 9-ridged. 
Styles quite confluent ... ... 7. 
„ free.. ... ... 8. 
Ovary 10-ridged. 
Leaves glabrous on both surfaces ... 9. 
,, with a dense layer of minute 
adpressed hair on the under 
surface ... ... 10. 
Leaves boldly 3-nerved at the base, the 
central nerve (midrib) without lateral 
nerves, only 3 or 4 in. long ; ovary 5-ridged 11. 
P. triptera. 
P. llooheriana. 
P. Kunstleri. 
P. perakensis. 
P. macrophylla. 
P. floribunda. 
P. Curtisii. 
P. eximia. 
P. Scortechinii. 
P. Grifithii. 
P. strychnoidea. 
1. Pentace triptera, Mast, in Hook. fil. PI. Br. Ind. i. 382. A 
large tree: young branches pubescent, speedily becoming glabrous, 
their bark dark-coloured. Leaves ovate to ovate-rotund, ° sometimes 
ovate-oblong, sub-acute or shortly and bluntly aouminate, the margins 
undulate, the base rounded; upper surface glabrous, the lower pale, 
minutely scaly ; basal nerves one or two pairs; lateral 5 to 7 pairs, as- 
cending, straight ; length 4 to 5 in., breadth 2 to 2 75 in. ; petiole -6 to 
12 in. thickened towards the apex, pubescent. Panicles terminal and 
axillary, 6 to 8 in. long, with short many-flowered branches minutely 
and softly stellate-tomentose. Flowers nearly -2 in. long, on pedicels 
shorter than the calyx. Calyx with 5 lanceolate teeth, tomentose outside. 
Petals spathulate-oblong, obtuse. Stamens 5-delphous, longer than the 
style. Staminodes subulate, shorter than the stamens. Ovary densely 
tomentose, shortly 3-winged. Style filiform, glabrous, bent at the 
apex. Fruit oblong, narrow, '6 in. long, with 3 spreading membranous 
rounded wings '5 in. broad. 
