XIII. c.i Merrill: Philippine Plants, XIII 7 



haud 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, subovoideis, 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, 3 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, brov/n-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. Glans 

 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- 



