XIII, C, 1 
Merrill: Philippine Plants, XIII 
7 
baud anastomosantibus, reticulis tenuibus, confertis, obscuris, 
subparallelis ; cupulis obovoideis, pubescentibus, 2 cm diametro, 
obscure zonulatis, basi contractis, dentibus circiter 1 mm longis, 
infra distantibus, supra confertis; glans puberulis, 1.5 cm dia- 
metro, circiter 1.5 cm longis, subovoicleis, apiculatis. 
A tree about 12 m high, the younger parts densely ferruginous- 
pubescent. Branches terete, brownish, glabrous, somewhat 
lenticellate. Leaves coriaceous, oblong-ovate to ovate-lanceolate, 
10 to 15 cm long, 8 to 6 cm wide, entire, base acute, apex 
slenderly subcaudate-acuminate, the acumen blunt, up to 2 cm 
in length, the upper surface glabrous except for the pubescent 
midrib, smooth, shining, pale or brownish-olivaceous when dry, 
the lower surface paler than the upper, pubescent on the midrib 
and nerves; lateral nerves 7 to 9 on each side of the midrib, 
prominent, curved-ascending, not anastomosing, the reticulations 
slender, close, subparallel, inconspicuous; petioles densely pu- 
bescent, 5 to 8 mm long. Infructescences simple, up to 12 cm 
in length, spike-like, rather stout, lenticellate, when young 
pubescent, ultimately glabrous, each bearing two or three fruits. 
Cups obovoid, about 2 cm in diameter, brown-pubescent on 
both surfaces, rather abruptly contracted below into a stout 
pseudo-stalk which is 5 to 8 mm long and about 5 mm in dia- 
meter, somewhat contracted to the truncate orifice which is 1.5 
cm in diameter, the zones obscure, about 10 in all, the lower 
ones distant and with distant teeth, the upper ones close, the 
teeth contiguous, the teeth narrow, 1 mm long or less. Gians 
ovoid from a truncate base, about 1.5 cm long and wide, about 
two-thirds contained within the cup, puberulent, apiculate. 
Luzon, Cagayan Province, Pamplona, For. Bur. 26973 Velasco, August 
9, 1917, in forests, altitude about 60 meters. 
The alliance of this species is not entirely clear, but it is apparently 
most closely related to Quercus llanosii A. DC., from which, however, it 
is distinguished by numerous characters. It is one of the species that is 
difficult to place as between the sections Pasania and Cyclobalanus, but 
I have placed it in the latter section as the scales have free apices and are 
not imbricate; the zones are indistinct, distant below, and contiguous above. 
QUERCUS MABESAE sp. nov. § Pasania. 
Arbor circiter 20 m alta, ramulis et subtus foliis minute 
brunneo-puberulis vel pubescentibus; foliis coriaceis, oblongis, 
usque ad 14 cm longis, utrinque subaequaliter angustatis, basi 
acutis, apice tenuiter acuminatis, supra glabris, vel junioribus 
leviter puberulis, laevis, nitidis, in siccitate brunneis, subtus 
subconcoloribus vel paullo pallidioribus ; nervis utrinque circiter 
9, perspicuis, curvatis, obscure anastomosantibus, reticulis sub- 
