xni, c, 2 Merrill: New Species of Bornean Plants 75 



MELIACEAE 

 DYSOXYLUM Blume 

 DYSOXYLUM KINABALUENSE sp. nov. § Eudysoxylum. 



Arbor glabra, circiter 10 m alta; foliis alternis, circiter 40 

 cm longis, foliolis omnibus alternis, utrinque circiter 4, distanti- 

 bus, oblongis, chartaceis ad subcoriaceis, usque ad 15 cm longis, 

 in siccitate minute verruculosis, tenuiter acuminatis, basi acutis, 

 plerumque plus minusve inaequilateralibus, nervis utrinque cir- 

 citer 10; inflorescentiis axillaribus, simplicibus, racemiformibus, 

 circiter 10 cm longis, paucifloris ; floribus 4-meris, circiter 6 mm 

 longis, calycis brevibus, subcupulatis, 4-dentatis, petalis extus 

 puberulis, liberis, tubo libero, extus puberulo, ovario minute 

 puberulo. 



A glabrous tree about 10 m high, the branches slender, the 

 ultimate branchlets 3 mm in diameter or less. Leaves alternate, 

 about 40 cm long, the leaflets all alternate, distant, about 4 on 

 each side of the rachis, chartaceous to subcoriaceous, oblong, 12 

 to 15 cm long, 3.5 to 5 cm wide, apex slenderly acuminate, 

 base acute, usually distinctly inequilateral, when dry suboliva- 

 ceous, or somewhat brownish beneath, slightly shining or dull, 

 minutely but not densely verruculose; lateral nerves rather 

 slender, about 10 on each side of the midrib, curved, obscurely 

 anastomosing, the reticulations nearly obsolete; petiolules 5 to 

 8 mm long. Inflorescences axillary, solitary, racemiform, about 

 10 cm long, few-flowered, the rachis castaneous when dry, min- 

 utely and obscurely puberulent, the very short, few-flowered 

 branchlets 3 mm long or less. Flowers cream-colored, 4-merous, 

 about 6 mm long, their pedicels very short. Calyx slightly 

 cup-shaped, dark-brown when dry, obscurely puberulent, the 

 teeth 4, short, triangular-ovate, subacute. Petals 4, free, nar- 

 rowly oblong, 5.5 mm long, slightly puberulent. Staminal-tube 

 cylindric, 5 mm long, shallowly 8-toothed, slightly puberulent 

 externally, glabrous within. Anthers 8. Ovary and style min- 

 utely cinereous-puberulent, 4.5 mm long. Disk glabrous, 2 mm 

 long, cylindric, obscurely crenate. 



British North Borneo, Mount Kinabalu, Gurulau Spur, Mrs. Clemens 

 10803, November 27, 1917, in forests. 



The alliance of this species is manifestly with the Philippine Dysoxylum 

 palawanense Merr. and D. panayense Merr. from both of which it differs 

 in numerous details. It is distinctly closer to the latter than to the former. 



Probably referable here is Clemens 10820, same locality and date, in 

 fruit. The fruits are bright-orange when fresh, when dry castaneous, 

 glabrous, shining, obovoid, about 4.5 cm long. 



