13^! G. King — Mater iah for a Flora of the Malayan Peninsula. [No. 2, 



the reticulations and 6 pairs of nerves bold and prominent ; length 4 to 

 5 in., breadth 1*25 to 1*75 in. ; petiole '2 to '3 in. Panicles axillary and 

 terminal, slender, spreading. Flowers '25 in. in diam. ; shortly pedicellate. 

 Sepals 5, pubescent, slightly unequal. Ovary hairy. Samaras 2 in. 

 long ; the nucleus 1 in. to 1*25 long, triangular, flat ; the wing thinly 

 membranous, pale yellow, oblong, its apex blunt, oblique, venation 

 vertical, the areolae wide. Isopteris penangiana, Wall. Cat. 7261. 



Penang. Malacca. Perak; common. 



The pubescence on the under surfaces of the leaves is so minute 

 that, without a good lens, it is not seen. 



5. Xanthophyllum, Roxb. 



Trees or shrubs. Leaves coriaceous or sub-coriaceous, usually yellow- 

 ish green. Sepals 5, nearly equal. Petals 5 or 4, the inferior keeled, 

 not crested. Stamens 8, distinct, 2 attached to the base of petals, the 

 others hypogynous. Ovary often surrounded by a hypogynous disc, 

 stipitate, 1-celled ; style more or less filiform, ovules various in insertion 

 and number. Fruit 1-celled, 1-seeded, indehiscent. Seeds exalbumi- 

 nous, estrophiolate. Distrib. Species about 27, mostly Malayan, a few 

 Indian and one in Queensland. 



Ovules 4. 



Leaves membranous or sub-coriaceous (coriace- 

 ous in No. 2) small : flowers less than '4 in. 

 long. 



Fruit not verrucose. 



Ovary glabrous, fruit shining 

 Ovary tomentose 



Nerves of leaves 3 to 4, young 



fruit tomentose ... 

 Nerves of leaves 4 to 5, fruit tomen- 

 tose, branches very slender ,,, 

 Fruit verrucose. 



Fruit verrucose only when ripe, glab- 

 rous; leaf -nerves 9 to 10 pairs 

 Fruit verrucose from its youngest state. 

 Nerves of leaves 4 to 5, ovary vil- 

 lous ; fruit glabrous, vertically 

 grooved 

 Nerves of leaves 4 to 5 ; ovary vil- 

 lous, fruit puberulous not verti- 

 cally grooved 



1. Andamanicum>» 



2. Griffithii. 



3. Maingayi, 



4. glaucum, 



5. Palemhanicum, 



6. eurhynchum. 



