Quercus caeruleocarpa Trel. 1924

Twigs rather slender (2-3 mm.), little fluted, glabrate from dingy stellulate scurfy.
Buds glossy brown, glabrate, ovoid, 2 mm. in diameter. Leaves subevergreen?,
lanceolate, acute at both ends or somewhat rounded at base, entire, very minutely
revolute, moderate (3-3.5 x 8-10 cm.), green and glossy on both faces, glabrous
except for the slightly puberulent midrib above and some axillary tufts beneath;
veins about 8-10 pairs, looped at some distance from the margin; petiole scurfy,
about 1 x 10 mm. Catkins ?. Fruit annual, on a stalk scarcely 10 mm. long; cup
deeply saucer-shaped, moderate (15 mm. in diameter), with thin appressed very
obtuse somewhat tomentose brown scales; acorn ovoid, umbilicate, glabrous
and lightly glaucous, half-included.
Cordilleran region of Mexico.