Quercus pringlei Seemen ex Loes.

Mexico ( Coahuila, Durango, Hidalgo, Nuevo Leon, Queretaro, San Luis Potosi, Tamaulipas, Zacatecas) ; 1000-3000 m;

usually less than 2 m tall, but reaches 3 m;

1.6-4 cm long, 0.5-1.3 wide; evergreen; semi-leathery; narrowly elliptic or oblong, seldom lanceolate; apex often mucronate, obtuse; base rounded; margin thick, flat, cartilaginous, entire or seldom with 1-3 pairs of small, mucronate teeth in apical 2/3; lustrous olive-green, glabrous above; beneath dull and pale; with stellate pubescence at first near base, along with long, simple glandular hairs, then glabrous and often pale glaucous; 6-9 straight vein pairs nearly plane both sides, not conspicuous; epidermis smooth ; petiole 2-6 mm long, with short pubescence;

in March-April; male catkins 1-3 cm long, with numerous flowers with 5-6 stamens; female catkins pubescent, 2-4 mm long, with 1-3 flowers;

acorn ovoid or globose 1-1.4 cm; singly or paired, sessile or on a very short peduncle less than 10 mm long; cup half-round, 9-12 mm in diameter, enclosing 1/3 or 1/4 of nut, with pubescent scales; maturing in 1 year in October;

hardy zone 7;

– A. Camus : n° 177; – Sub-genus Quercus, Section Quercus, Series Leucomexicanae, Group Opacae; – Related to Q.grisea ; – Resembles sometimes Q. depressipes , but the leaves of this species are dull, glaucous, oblong-oboval to nearly orbicular, and the peduncles are longer (1.5-3.5 cm); ressembles as well Q. opaca : see this item;