Quercus exaristata Trel. 1924

Twigs moderate (3-4 mm.), somewhat fluted, transiently dingy-stellate, gray when denuded.

Buds ?. Leaves deciduous, elliptic-oblong, usually widened upwards, very obtuse and without

even a terminal awn, rounded or subcordate at base, entire, narrowly revolute, coriaceous,

somewhat glossy, glabrescent or somewhat scurfy in sheltered places above and paler and fleecy

in places beneath; veins about 12 pairs, branching and looped; petiole hairy, scarcely 5 mm.

long. Catkins: female 15 mm. long, glabrescent, about 3-flowered toward the end. Fruit biennial,

rather small, the shallow cup 10 mm. in diameter with thin appressed blunt rather glabrescent

brown scales.

Western Sierra Madre region of Mexico.