Quercus Poculifer Trel. 1924

Twigs rather slender (2-3 mm.), little fluted, nearly glabrous and rather
dull, light brown with conspicuous pale lenticels. Buds very light dull
brown, more or less persistently loosely hairy, rounded, 2 mm. in
diameter, the upper with rather persistent stipules. Leaves deciduous?,
elongated obovate, obtuse or short-acuminate, slightly cordate to
typically acute at base, low-repand or crenate above, rather large
(6-12 x 12-16 cm.), glossy, glabrous and finely raised-veiny above
or the midrib somewhat resinous-puberulent, the lower surface pale,
dull, low-bullulate and sparingly to densely stellate-pubescent; veins
about 12-15 pairs, rather obscurely looped; petiole bright red, glabrescent,
about 2 x 10 mm. Catkins?. Fruit annual, solitary and nearly sessile; cup
shallow-goblet-shaped when fully developed, thick, large (25-30 mm. in
diameter), with rather thin appressed slender-pointed closely gray- or red-felted
scales; acorn ellipsoid, 25 mm. long, glossy chestnut, half-included.
Cordilleran region of Mexico.