i 
NOTES ON PHILIPPINE EUPHORBIACEAE. 409 
3 cm long, thickened upwards, the persistent sepals 5, reflexed, 
oblong, about 4 mm long. 
Negros, Mount Silay, in forests at an altitude of about 500 m, For. Bur, 
7257 Everett, (type) September, 1907; Sicaba River, For. Bur, 558U Eve- 
retty November, 1906. 
This very characteristic species is not referable to any recognized sec- 
tion of the genus Trigonostemon, although it apparently belongs in that 
genus. In essential characters it agrees with Trigonostemon, differing in 
its leaf -opposed cymose inflorescence, and in its filaments being united 
below into a column but free and spreading above. It is possible that the 
examination of a full series of specimens and direct comparison with the 
known species of Trigonostemon may show the characteristic features of 
the present species to be sufficiently distinct to warrant its separation. 
as a distinct genus. 
TRIGONOSTEMON OBLONGIFOLIUS sp. nov. § Eutrigonostemon. 
Arbor parva usque ad 6 m alta, subglabra; foliis oblongis, 
usque ad 18 cm longis, integris, obtusis, basi acutis, coriaceis, 
nervis utrinque circiter 9, distantibus, reticulis subobsoletis; 
petiolo 1.5 ad 2.5 cm longo; paniculis angustis, axillaribus, folia 
Bubaequantibus, longe pedunculatis ; floribus s numerosis, sub- 
fasciculato-glomeratis, 3 mm longis; antheris 3, apice baud 
bifidis; capsulis depresso-globosis, pubescentibus, circiter 1 cm 
diametro. 
A small tree or a shrub 6 m high or less, nearly glabrous. 
Branches terete, brownish, striate when dry, glabrous, the 
growing parts more or less fulvous-hirsute with appressed hairs, 
these hairs often persisting in the axils of the petioles. Leaves 
alternate, entire, oblong, coriaceous, 9 to 18 cm long, 2.5 to 5 
cm wide, coriaceous or subcoriaceous, narrowed at both ends, 
the apex obtuse, the base acute, glabrous or nearly so, rather 
pale when dry, somewhat shining, the lower surface often 
brownish; nerves about 9 on each side of the midrib, distinct 
on the lower surface, curved-anastomosing, the reticulations 
obsolete or nearly so; petioles 1.5 to 2.5 cm long, sparingly 
appressed-pubescent, ultimately glabrous or nearly so. Panicles 
axillary, solitary, narrow, long- and slenderly peduncled, slightly 
pubescent, the peduncles 7 to 10 cm long, less than 1 mm in 
' diameter. Male flowers very numerous, more or less glomerate- 
fascicled, pedicelled, the bracts lanceolate, 2 to 3 mm long, the 
bracteoles much smaller. Sepals imbricate, the outer two about 
1.6 mm long, the inner three larger, about 2.5 mm long, orbic- 
ular-ovate, concave, imbricate. Petals 5, dark-purple when 
dry, free, obovate, about 3 mm long, 2.5 mm wide, apex rounded- 
truncate, base much narrowed. Disk cupular, truncate, about 
0.4 mm high. Filaments entirely united, nearly 1 mm longr. 
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