342 NEW OR NOTEWORTHY BORNEAN PLANTS. 
Melastoma hirta Linn. Sp. Pl. (1753) 390. 
British North Borneo, Sandakan and vicinity, Clemens 9464, 
October, 1915; Yates 3, October, 1917; Castillo 590, January, LOTS. 
on slopes near the sea; Foaworthy 604, January, 1916, at the base 
of sandstone cliffs; Wood 766, 848, May, 1920, on ridges; Ramos 
1134, in thickets and along small streams. This American species 
is thoroughly naturalized in the vicinity of Sandakan as it is in ~ 
Singapore and in Java. 
Pachycentria Blume. 
Pachycentria constricta Blume in Flora 14 (1831) 520; Cogn. 
in DC. Monog. Phan. 7 (1891) 608. 
British North Borneo, Batu Lima near Sandakan, Ramos 
1163. On trees in forests at low altitudes. Java. 
ALANGIACEAE. 
Alangium Lamarck. 
Alangium borneense sp. nov. § Marlea. 
Arbor circiter 15 m. alta, ferrugineo-pubescens; foliis sub- 
coriaceis, oblongis, acuminatis, 15—238 cm. longis, basi rotundatis, 
supra glabris, subtus ad costam nervosque pubescentibus, nervis 
utrinque 10—14, perspicuis; cymis axillaribus 3—7-floris; calyce 
10-sulcato, truncato; stylis sursum incrassatis, apice perspicue 3- . 
lobatis, lobis papillatis, 2.5 mm. longis. 
A tree about 15 m. high, the branches, branchlets, and in- 
florescences densely ferruginous-pubescent. Leaves subcoriaceous, 
oblong, 15 to 23 cm. long, 6 to 9 cm. wide, pale brown when dry, 
sharply acuminate, base rounded, the upper surface glabrous, the 
lower pubescent on the midrib and lateral nerves; nervis 10 to 14 
on each side of the midrib, prominent, curved, the reticulations 
subparallel; petioles pubescent, 1 to 1.5 cm. long. Cymes axillary, 
pubescent, 3- to 7-flowered, including the flowers 4 to 5 cm. long. 
Calyx pubescent, about 6 mm. long, prominently 10-sulcate, the 
limb somewhat spreading, about 4 mm. in diameter, truncate, or 
very shallowly and obscurely toothed. Petals 5 or 6, linear-lanceo- 
late, coriaceous, densely pubescent, 2 cm. long, 2.5 mm. wide. 
Stamens 5 or 6, about 1.6 cm. long, the filaments somewhat flat- 
tened. Style about 1.5 cm. long, thickened upward, narrowly 
club-shaped, appressed-pubescent; stygma distinctly 3-lobed, the 
lobes ovate-lanceolate, papillate, 2.5 mm. long. 
British North Borneo, Batu Lima, near Sandakan, Agama 
1022 (type) Ramos 1451, November 1920, on steep damp torested 
slopes, altitude about 70 m. A species allied to Alangium vitiense 
(A. Gray) Harms var. tomentoswm Benth., differing notably in its 
very much larger leaves, much larger flowers, prominently sulcate 
calvees, and 3-lobed styles. 
