XIV, 2 Merrill: The Flora of Sumatra 247 
This species is apparently most closely allied to Osmelia main- 
gayi King, of the Malay Peninsula, and possibly is represented 
by Beccari 928 from Sumatra mentioned by King in a note 
following his description. It is distinguished among all the 
hitherto described species of the genus by its few-nerved leaves. 
This small genus, for many years known only from Ceylon and 
the Philippines, is now represented by 7 or 8 species, the known 
range of the genus now being Ceylon, Sumatra, Malay Penin- 
sula, Borneo, the Philippines, and Celebes. 
MELASTOMATACEAE 
M EM EC Y LON Linnaeus 
MEMECYLON LARUEI sp. nov. 
Frutex vel arbor parva, ramis teretibus, ramulis 4-angulatis 
et anguste 4-alatis; foliis coriaceis, lanceolatis, sessilibus vel 
subsessilibus, usque ad 20 cm longis et 5.5 cm latis, basi rotun- 
datis, plerumque subcordatis, sursum angustatis, tenuiter acute 
acuminatis, nervis utrinque circiter 15, rectis, perspicuis, cum 
nervis marginalibus anastomosantibus ; inflorescentiis axillari- 
bus, solitariis, paniculatis, longe pedunculatis, 10 ad 15 cm longis. 
A glabrous shrub or small tree, the branches terete, about 
3 mm in diameter, the branchlets sharply 4-angled and narrowly 
winged, the wings not appendiculate at the nodes, the internodes 
4 to 5 cm long. Leaves coriaceous, lanceolate, sessile or subses- 
sile, base rounded and usually slightly cordate, gradually nar- 
rowed upward to the long, slenderly acuminate apex, 14 to 20 
cm long, 3 to 5.5 cm wide, usually shining, the midrib impressed 
on the upper surface, very prominent on the lov/er surface; 
primary lateral nerves about 15 on each side of the midrib, 
distinct on the lower surface, anastomosing with the equally 
prominent, slightly arched, marginal nerves, 2.5 to 5 mm from 
the edge of the leaf, reticulations obsolete. Inflorescences 
axillary, solitary, long-peduncled, paniculate, 10 to 15 cm long, 
the branches few, opposite, spreading, the lower ones up to 4 cm 
long, usually sulcate. Flowers subumbellately arranged at the 
tips of the branchlets, their pedicels about 3 mm long, each 
subtended by several, lanceolate, acuminate, 1 mm long brac- 
teoles, the bracts subtending the branches similar to the brac- 
teoles but twice as long. Calyx shallowly cup-shaped, 2.5 to 
3 mm in diameter, somewhat 4-toothed. Petals obliquely and 
broadly ovate, about 2 mm long. 
Sumatra, East Coast, Asahan, in second-growth jungle at 
Lau Boeloeh, Bartlett & La Rue 236, July 1, 1918. 
