Quercus mixtecana Trel. 1924

Twigs moderate (2-4 mm.), little fluted, glabrous, rather dull, greenish with rather prominent small lenticels.
Buds dull brown, glabrous, round, about 3 mm. in diameter. Leaves deciduous, obovate, obtuse, shallowly
cordate, crisply somewhat serrately incised above, rather large (6 x 10-12 cm.), glabrous and very lightly
glaucous, dull light blue-green above, clear green with prominent white venation beneath; veins about 7-9 pairs,
looped; petiole glabrous, about 2 x 3 mm. Catkins?. Fruit annual, usually about 5 clustered toward the end of a
tomentose or glabrescent peduncle about 2 x 50-60 mm.; cup half-round, rather small (about 12 mm. in diameter),
with thickened appressed acute grayish or brown scales black when rubbed; acorn short-ovoid, scarcely 10 mm.
long, rusty-silky above, more than half-included.