Quercus transmontana Trel. 1924

Twigs rather slender (2-3 mm.), fluted, rather scurfy through the first season, glabrescent
and glossy brownish with rather small prominent lenticels of the same color. Buds ?,
the setaceous stipules persistent. Leaves deciduous, elliptical-oblong or widened upwards,
very obtuse, rounded at base, entire or somewhat crenately lobed above, narrowly revolute,
small (2 x 4 to mostly 6-9 cm.), glossy and glabrous or very slightly scurfy above, dull,
pale and for a time loosely stellate-scurfy beneath, the denuded surface scarcely granular;
veins reddish, about 10 pairs, often with evanescent intermediates, rather indistinctly looped;
petiole somewhat pilose, 1.5 x 3 mm. Catkins?. Fruit annual, few toward or at the end of a
stalk 10-20 mm. long; cup shallow-cup-shaped, rather small (10-15 mm. in diameter), with
thin appressed rather blunt scales brown by abrasion; acorn round-ovoid, scarcely 15 mm. long,
lully half-included.
Western Sierra Madre region of Mexico