524 The Philippine Journal of Science 1922 
supra impressis, subtus valde prominulis; infructescentiis axil- 
laribus, 3 cm longis; fructibus ellipsoideis, glabris, lenticellatis, 
2.5 cm longis. 
A woody vine, the young branchlets and nerves on the lower 
surface of the leaves very sparingly appressed-pubescent. 
Branches and branchlets with rather numerous small lenticels, 
the stipular spines stout, recurved, about 5 mm long, usually 
only one subtending each leaf. Leaves firmly chartaceous 
to subcoriaceous, oblong-elliptic, subolivaceous, shining when 
dry, 6 to 11 cm long, 2.5 to 4.5 cm wide, narrowed at both 
ends, the apex prominently acuminate, the acumen blunt and 
usually apiculate, base slightly inequilateral, rather minutely 
cordate, prominently 3-nerved, the margins minutely serrulate; 
nerves impressed on the upper surface, the lateral pair extend- 
ing into the acumen, very prominent on the lower surface, the 
transverse nervules and reticulations prominent; petioles 3 to 5 
mm long, somewhat pubescent. Cymes axillary, more or less 
branched, in fruit about 3 cm long including the fruits, the 
latter ellipsoid, glabrous, prominently lenticellate, about 2.5 cm 
long. 
British North Borneo, Sandakan, Suanlamba watershed, Cas- 
tillo 644, August 9, 1918. On forested river banks, altitude 
about 50 meters. Batu Lima, Agama 1018, November, 1921. 
This species in vegetative characters is very similar to Zizy- 
phus horsfieldii Miq., but is especially distinguished by its ellip- 
soid, not globose, entirely glabrous, conspicuously lenticellate 
fruits. 
STERCULIA Linnaeus 
STERCULIA ACUMINATISSIMA sp. nov. 
Arbor, inflorescentiis exceptis glabra; foliis chartaceis, 
oblongo-ovatis, utrinque nitidis, 16 ad 20 cm longis, basi late 
rotundatis, 3-nervis, apice tenuiter caudato-acuminatis, nervis 
utrinque circiter 5, perspicuis; inflorescentiis tenuibus, anguste 
paniculatis, circiter 20 cm longis, longe pedunculatis, castaneis, 
leviter pubescentibus ; floribus 15 ad 18 mm longis, tenuiter pedi- 
cellatis, calycis tubo cylindraceo, subglabro, lobis 4 ad 6 mm 
longis, erectis, liberis, anguste oblongis, obtusis; ovario sub- 
sessile, dense pubescente. 
A tree, glabrous except the inflorescences, the ultimate 
branches grayish, 5 to 7 mm in diameter. Leaves chartaceous, 
oblong-ovate, shining on both surfaces, 16 to 20 cm long, 8 to 9 
cm wide, the base rather broadly rounded, 3-nerved, the apex 
slenderly caudate-acuminate, the acumen about 2 cm long, acute; 
