Quercus uruapanensis Trel. 1924

Twigs rather slender (2-3 mm.), little fluted, soon glabrous and dark red with small
pale lenticels. Buds rather glossy deep brown, more or less puberulent, ovoid, 2 x 3 mm.
Leaves deciduous, lanceolate or oblanceolate to elliptical, somewhat acuminate, obliquely
rounded or truncate to acute at base, entire or exceptionally rather sharply and deeply
bristly-serrate above, slightly revolute, rather large (4-6 or 7 x 9-16 cm.), glossy and glabrous
or somewhat axillary-tufted beneath; veins about 10-12 pairs, somewhat forking and looped;
petiole glabrous, 2 x 10-25 mm. Catkins?. Fruit biennial, solitary or paired on a stalk some
3 x 10 mm.; cup half-round, moderate (15 mm. in diameter), with .thin appressed blunt c
anescent scales, its margin typically inrolled; acorn ovoid, 20 mm. long, one-third included.
Western Sierra Madre (and cordilleran ?) region of Mexico.