Quercus martinezii C.H.Mull.

Mexico (Jalisco, Michoacan, Guerrero, Mexico, Nayarit, Oaxaca) ; 800-2700 m ;

6-25 m tall, trunk to 20-50 cm in diameter, or more;

10-20 x 3-9 cm; deciduous; thick, leathery; oblanceolate, oboval or elliptic; apex acute or acuminate; base rounded, or cordate, often asymmetrical; margin cartilaginous, slightly thickened, rolled under, entire or usually with 3-6 pairs of obtuse, mucronate teeth ; greyish green, lustrous above, hairless or with pubescence ramaining along midrib; dull glaucous beneath under a dense pale grey tomentum made of sessile 10-12 arms trichomes and golden wormlike glandular hairs; 8-14 vein pairs, prominent below; epidermis bullate, papillose; petiole 0.6-2 cm, tomentose;

in April; male catkins 6-14 cm long, with hairy axis;

acorn 1.5-2 cm long; pale brown; paired or 3-4 together; peduncle 2-6 cm long; cup half-round with tomentose scales enclosing 1/3 to 1/2 of nut; maturing in 1 year;

not quite hardy (?);

– Sub-genus Quercus, Section Quercus, Series Leucomexicanae; – Possible confusion with Q. scytophylla , but this one is in the Lobatae Section, hence it has aristate teeth instead of mucros.