i7, 6 Merrill: Studies on Philippine Rubiaceae, IV 463 
fructibus globosis, circiter 7 mm diametro, seminibus 4, concavo- 
convexis. 
A small tree, about 5 m high, the younger parts, inflorescences, 
and leaves on the midrib and nerves beneath prominently ciliate 
with pale or subferruginous, rather stiff hairs. Branches terete, 
dark reddish-brown, glabrous, the branchlets slender, somewhat 
angled or sulcate. Leaves membranaceous to subchartaceous, 
olivaceous and shining when dry, oblong-oblanceolate, 10 to 17 
cm long, 3 to 5 cm wide, narrowed upward to the slenderly and 
sharply acuminate apex, and below to the cuneate base, the 
upper surface glabrous, smooth, or the midrib slightly pubescent, 
the lower surface somewhat paler, conspicuously ciliate on the 
midrib and nerves, and with fewer hairs on the reticulations; 
lateral nerves 9 to 12 on each side of the midrib, prominent, 
curved-ascending, anastomosing, the reticulations lax, distinct; 
petioles ciliate, 1 to 1.5 cm long; stipules lanceolate or ovate- 
lanceolate, acuminate, about 8 mm long, sparingly ciliate on 
the back. Infructescences terminal, short, ciliate, about 3 cm 
long, trichotomous, the peduncles 1.5 cm long or less. Fruits 
few, globose, dark-brown or black when dry, glabrous or with 
few scattered hairs, about 7 mm in diameter. Seeds 4, some- 
what triangular in outline, thick, concavo-convex. 
Luzon, Apayao Subprovince (not Cagayan Province as indi- 
cated on the herbarium label), between Tamoc and Dabba, Bur. 
Sci. 1390 U (type), 13958 Ramos, February, 1912. 
This species is well characterized by its short infructescences, 
its few fruits, its slenderly and sharply acuminate leaves, and its 
Indumentum. 
TARENNA CATAN DUAN ENSIS sp. nov. 
Frutex subglaber ; foliis oblongis ad oblongo-ellipticis, firmiter 
chartaceis, usque ad 30 cm longis, supra laevis, glabris, nitidis, 
pallide olivaceis, subtus parcissime puberulis et minutissime 
scaberulis, apice tenuiter acute acuminatis, basi acutis, nervis 
utrinque circiter 9, valde perspicuis, arcuato-anastomosantibus ; 
infructescentiis leviter pubescentibus, cymosis, pedunculatis, 
circiter 8 cm longis; fructibus globosis, 8 ad 10 mm diametro, 
glabris, in siccitate rugosis; seminibus 4 ad 6, angulatis, sub- 
cupulatis, rugosis. 
A nearly glabrous shrub, the branches obscurely angled or 
somewhat compressed. Leaves firmly chartaceous, oblong to 
oblong-elliptic, 17 to 30 cm long, 6.5 to 10.5 cm wide, base 
acute, apex slenderly and sharply acuminate, the upper surface 
