80 The Philippine Journal of Science wis 



acute base and to the rather prominently but obtusely acuminate 

 apex, the acumen 1.5 cm long or less, pale-olivaceous and shining 

 when dry, glabrous, or the lower surface in young leaves with 

 very few, widely scattered, stellate hairs; midrib projecting on 

 both surfaces; lateral nerves about 15 on each side of the midrib, 

 prominent, curved, obscurely anastomosing, the reticulations 

 close, slender; petioles 1 to 1.5 cm long, jointed at or above 

 the middle, glabrous. Panicles axillary, about as long as the 

 leaves, lax, pyramidal, branched from near the base, the primary 

 branches few, spreading, the lower ones up to 7 cm in length, 

 densely ferruginous-stellate-pubescent with short hairs, the sec- 

 ondary branches when present usually less than 1 cm long, the 

 flowers subsessile or very shortly pedicelled, pale-yellow, 5- 

 merous, subspicately or subracemosely arranged, sometimes sub- 

 glomerate. Calyx-lobes elliptic,,* rounded, densely and minutely 

 stellate-pubescent, 0.8 mm long. Petals free, glabrous, oblong 

 to oblong-obovate, 1.8 mm long. Staminal-tube obovoid, about 

 1.2 mm in diameter, contracted to the 0.5 mm orifice, not at 

 all toothed. Stamens 5, included. Ovary minutely pubescent. 



British North Borneo, Marutai watershed near Tawau, Villamil 

 S68, May 28, 1917, on forested slopes at low altitudes. 



This species, dedicated to Mr. D. M. Matthews, conservator of forests, 

 British North Borneo, falls in the group of the very few species having 

 unifoliolate leaves, such as A. luzoniensis (Vid.) Merr. & Rolfe (Aglaia 

 monophylla Perk.) of the Philippines and Celebes, from which Aglaia 

 unifoliolata Koord. cannot be distinguished, A. simplicifolia Harms of 

 New Guinea (an invalid name), and Aglaia simplicifolia (Bedd.) Harms 

 (Beddomea simplicifolia Bedd.) of India, from all of which it is distin- 

 guished by numerous characters. From the Bornean Aglaia siibmonophylla 

 Miq. it is distinguished by its constantly 1-foliolate leaves, its much longer 

 inflorescences, and by its indumentum not being all lepidote. 



EUPHORBIACEAE 



CLEISTANTHUS Hooker f. 

 CLEISTANTHUS OLIGOPHLEBI US sp. nov. § Stipulati. 



Species C. paxii Jabl. affinis, differt omnibus partibus (floribus 

 et frutibus exceptis) glabra, nervis lateralibus utrinque 3 vel 4, 

 valde obliquis. Frutex vel arbor, ramis ramulisque tenuibus, 

 glabris; foliis oblongis ad oblongo-ovatis, chartaceis vel sub- 

 coriaceis, usque ad 9 cm longis, basi acutis ad subrotundatis, 

 apice acuminatis, nervis utrinque 3 vel 4, subtus valde perspicuis, 

 curvato-adscendentibus ; f ructibus sessilibus, 3-lobatis circiter 12 

 mm diametro, parcissime adpresse hirsutis glabrescentibus. 



A shrub or small tree, glabrous except the flower and fruits. 

 Branches and branchlets slender, terete or subterete, the former 



