Quercus chiquihuitillonis Trel. 1924

Twigs moderate (3 mm.), fluted, glabrate except in sheltered places, from very thickly
yellowish-stellate, glossy brown with minute and inconspicuous lenticels. Buds?. Leaves
thin but hard, somewhat irregularly elliptical, very obtuse, rounded at base or subcordate
-- on shoots varying into lanceolate and acute, somewhat revolute, rather large
(3.5-6 x 8-12 or 16 cm.), glossy, rather blue-green and glabrous or slightly stellate above,
the even more glossy lower surface glabrous or slightly floccose along the midrib; veins
about 12-15 pairs, commonly with 1-3 evanescent intermediates, repeatedly forking, obscurely
looped at some distance from the margin, with indistinct reticulation; petiole yellow-tomentose,
2 x 2-5 mm. Catkins: male, 50 mm. long, staringly white-hairy, rather loosely flowered, the
glabrous anthers little exserted — some flowers with small ovoid galls. Fruit evidently biennial,
solitary and sessile; cup very shallow, moderate (about 15 mm. in diameter), with thin appressed
rather blunt somewhat ashen scales; acorn ovoid, 15 mm. long, covered at the base only.
Western Sierra Madre region of Mexico.