Quercus albocincta Trel.

Mexico in the North-West (Sonora, Sinaloa, Durango, Chihuahua); 800-1800 m;

tree to 3-15 m tall; trunk 25-50 cm in diameter;

7-16 cm x 4-8; deciduous; stiff and coriaceous; more or less broadly ovate; apex attenuate, base varying; margin thickenned, revolute, with 3-6 pairs of bristled teeth (teeth 4-5 mm, bristle-tip 5-12 mm long); young leaves pubescent on both sides; mature ones lustrous, soon glabrous adaxially, with some short hairs along midrib; undersides almost hairless, with some tufts at axils, without glandular hairs; 7-14 vein pairs flat above, raised beneath; petiol 2-6 cm long, 1-1.5 mm in diameter, glabrescent.

male catkins 10-15 cm long; pistillate ones 0.5-2.5 cm, 1 to 5-flowered;

acorn ovoid, 1-1.9 cm long,0.1-1 cm in diameter, glabrescent, with thin pericarp; solitary or clustered; cup halfround, with straight rim, stalkless or nearly so, with smooth, appressed scales, enclosing almost 1/2 of nut; maturing second year;

not hardy;

– A. Camus : n° 396; – Sub-genus Quercus, section Lobatae, Series Erythromexicanae, Group Acutifoliae; – Resembles Q.canbyi , that has less teeth and veins, shorter petioles and bristle-tips;