100 



Leaves with pinnate nervation. 

 Ovary 3-ridged... 

 Ovai'y 5-ridged, 



Leaves with 6 or 7 pairs of nerves... 2. 

 „ 3 or 4 „ ... 3. 



1. P. tripfera. 



P. Hookeriana. 

 P. Kunstle)-i. 

 P. perakensis. 



5. P. macrophylla. 



6. P. floribunda. 



Ovary 10-ridged 

 Leaves boldly 5-nerved at the base, lateral 

 nerves from the central nerve (midrib) 

 3 pairs ; 7 to 14 in. long ; ovary 5-ridged,.. 

 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 ... 

 Ovary 8 or 9-ridged. 



Styles quite confluent ... 



1) XrGG , • • act « • • 



Ovary 10-ridged. 



Leaves glabrous on both surfaces ... 

 ,, with a dense layer of minute 

 adpressed hair on the under 

 surface 



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. strychnoidea. 



7. 

 8. 



P. Gurtisii. 

 P. eximia. 



9. P. Scortechinii. 



10. P. G 



r% 



I. Pentace triptera, Mast, in Hook. fil. Fl. 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 acuminate, 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 275 in. ; petiole '6 to 

 1-2 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. Galyx 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. St^jle filiform, glabrous, bent at the 

 apex. Fruit oblong, narrow, 6 in. long, with 3 spreading membranous 

 rounded wings '5 in. broad. 



209 



