Mexico (Nuevo Leon, Tamaulipas, San Luis Potosi, Hidalgo, Queretaro, Veracruz); 1400-1900 m; (From Oaks of the World Site: http://oaks.of.the.world.free.fr/quercus_rhysophylla.htm
Hardy, tall tree reaching 25 m. Fast growing; prefers lime-free soils and full sun
Leaves: 6-22 cm sur 2-5; semi-evergreen; elliptic to oboval-lanceolate; thick, leathery, very rough; apex pointed, bristle-tipped; base subcordate; margin thickened, révolute, cartilaginous, entire or with 2-4 pairs of teeth in the apical half, sometimes on one side only; dark yellowish green above, lustrous, hairless except some stellate and glandular trichomes on veins; glaucous, hairless beneath, except some axillary tufts and some scattered glandular hairs; 13-17 pairs of secondary veins raised beneath, impressed above; tertiary veins conspicuous on both sides; epidermis papillose; short petiole (0.3-0.6 cm), glabrescent
Flowers: female catkins 1 cm long with 1-4 pubescent flowers, or more
Fruit: acorn ovoid, pointed, 1-1.5 cm long; singly or paired, or more on a stout, short peduncle; cup enclosing 1/3 to 1/2 of the nut; maturing in 1 year in July-August.
Bark, twigs: dark grey bark, deeply furrowed; twig sulcate, glabrescent, with small light lenticels; bud 6 mm long, with pubescent, deciduous stipules
From Oaks of the World: http://oaks.of.the.world.free.fr/quercus_rhysophylla.htm