Quercus Hahnii Trel. 1924

Twigs rather slender (2-3 mm.), fluted, from yellowish tomentose glabrescent and
rather glossy. Buds rather glossy light brown, glabrescent, ovoid, 2 x 3 mm. Leaves
deciduous?, elliptical passing into obovate, aristately obtuse, obliquely rounded at base
or slightly cordate, entire, revolute, rather large (4-7 x 9-16 cm.), glabrous and glossy above,
somewhat brownishtomentose beneath, the denudable surface bullate-granular; veins about
14 pairs, forking several times and more or less looped; petiole short-tomentose, 2 x 10 mm.
Catkins ?. Fruit biennial, 1 or 2 at end of a peduncle 3-4 x 10 mm., or of double this length
with more fruits; cup deep saucer-shaped, small (about 12 mm. in diameter), with thin
appressed blunt canescent scales with abraded brown tips, its margin usually inrolled;
acorn ovoid, 15 mm. long, less than half included.
Mexican table-land and adjacent mountains.