Quercus rhodophlebia Trel. 1924

Twigs rather slender (2-3 mm.), scarcely fluted, rusty stellate-tomentose, reddish,
turning gray when denuded and with numerous prominent lenticels. Buds densely
yellow-tomentose, glossy red when abraded, round-ovoid, 2 x 3 mm., the upper
with a few short investing stipules. Leaves deciduous, elliptical-obovate, very obtuse,
truncate at base or shallowly cordate, undulate and unequally revolute with some of
the upper veins mucronate, moderate (4-6 x 8-11 cm.), glossy, glabrous above except
for the somewhat stellate midrib and impressed-reticulate with slightly raised thick
veinlets, dull and loosely rusty-stellate beneath, the abraded surface pale and little bullate,
the glabrescent midrib and primary veins pink; veins about 10x2, or with some
evanescent intermediates, branched and rather evidently looped; petiole rusty-stellate,
10 mm. long. Catkins?. Fruit annual, several toward the end of a sparsely stellate
peduncle 1 x 90-100 mm.; cup half-round or somewhat acute-based, moderate
(15 mm. in diameter), with thin or slightly keeled rather close red-brown scales somewhat
rusty-puberulent below; acorn elongated, 10 x 20 mm., one-third included.
Western Sierra Madre region of Mexico.