80 The Philippine Journal of Science ms 
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 ; lateraf 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 
868, 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 submonophylla 
Miq. it is distinguished by its constantly 1-foliolate leaves, its much longer 
inflorescences, and by its indumentum not being all lepidote. 
EUPHORBIACEAE 
CL El ST A NTH US Hooker f. 
CL El STAN TH US OLIGOPHLEBIUS 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 ; fructibus 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 
