Quercus subturbinellaTrel. 1924

Twigs rather slender (2-3 mm.), little fluted, yellow-tomentose. Buds red-brown,
at length glabrescent, rounded, 2 mm. in diameter. Leaves deciduous, elliptical-oblong,
acute, slightly cordate, almost aristately undulate-dentate, somewhat scurfy on both
faces and reddish beneath, flat, very small (1-1.5 x 2-3 cm.); petiole scurfy, 2-3 mm.
long; veins about 6-8 pairs, scarcely looped. Catkins ?. Fruit annual, from solitary
and short stalked to paired or clustered at the end of a peduncle as much as 30 mm.
long; cup half round, rather small (10-12 mm. in diameter), with thin appressed acute
canescent scales; acorn ovoid, one-third included.
Western Sierra Madre region, scarcely south of the international boundary.