Quercus conglomerataTrel. 1924
Twigs rather stout (3-4 mm.), somewhat fluted, glabrate. Buds
ovoid, some 2 x 3 mm. Leaves deciduous, obovate, very obtuse, rounded at base
or somewhat cordate, entire or repand or somewhat toothed, mostly concave below,
rather large 6 x 10 cm. or more), glabrate above, more or less persistently stellate-pubescent
beneath; veins about 10-12 pairs, branched but at most irregularly looping; petiole somewhat
pubescent, 10-20 mm. long. Catkins?. Fruit annual, distributed along peduncles as much
as 100 mm. long; cup half-round, moderate (12-15 mm. in diameter), with rather thin and
loose puberulent acute scales; acorn rounded, half-included or less.
Cordilleran and Western Sierra Madre regions of Mexico.