402 The Philippine Journal of Science 1922 
ovary. Ovary ovoid, inequilateral, glabrous. Fertile stamen 1, 
the filament 3 mm long; staminodes 3, very slender, 0.5 mm 
long or less. Immature fruits ellipsoid, 2 cm long, glabrous, the 
seed compressed and apparently smooth. 
Luzon, Zambales Province, Masinloc, Merrill 2946, May, 1903, 
For. Bur. 27169 Maneja & Bawan (type), May, 1918. To this 
species I also refer For. Bur. 25497 Cruz from Lanao Dis- 
trict, Mindanao, although this specimen differs from the type 
in its very slenderly acuminate leaves. 
Among the Philippine species the present one is most closely 
allied to Mangifera monandra Merr., from which it is distin- 
guished by its much smaller leaves, smaller flowers, and pubes- 
cent inflorescences. It belongs in the group with M. quadrifida 
Jack. 
CELASTRACEAE 
LOPHOPETALUM Wight 
LOPHOPETALUM PAUCINERVIUM sp. nov. 
Arbor glabra, circiter 10 m alta; foliis coriaceis, oblongo- 
ellipticis, 10 ad 16 cm longis, integris, breviter obtuse acuminatis, 
basi rotundatis ad late acutis, in siccitate brunneo-olivaceis, sub- 
tus pallidioribus, nervis utrinque 5 vel 6, curvato-adscendentibus, 
perspicuis; paniculis axillaribus terminalibusque, 12 ad 15 cm 
longis; floribus circiter 7 mm diametro, calycis 5-angulatis, lobis 
brevissimis, acutis, petalis ovatis, obtusis, 8 mm longis, longitu- 
dinaliter cristatis, junioribus apice leviter fimbriatis, vetustiori- 
bus integris. 
An entirely glabrous tree about 10 m high, the branches and 
branchlets purplish-black when dry, somewhat rugose. Leaves 
coriaceous, oblong-elliptic, entire or the margins obscurely un- 
dulate, 10 to 16 em long, 5 to 8 cm wide, the apex with a broad, 
short, obtuse acumen, the base rounded to broadly acute, the 
upper surface when dry brownish-olivaceous, the lower paler; 
lateral nerves 5 or 6 on each side of the midrib, curved-ascending, 
obscurely anastomosing, prominent on the lower surface, the 
reticulations slender; petioles 1 to 2 cm long. Panicles axillary 
and terminal, 12 to 15 em long. Flowers white, about 7 mm in 
diameter, their pedicels up to 4 mm long, the bracteoles lanceo- 
late, acuminate, about 0.6 mm long. Calyx about 4 mm in 
diameter, 5-angled, the lobes short, acute. Petals ovate, obtuse, 
3 mm long, the younger ones slightly fimbriate at their apices, 
the older ones entire, longitudinally cristate on the inner face. 
