Quercus albocincta Trel.

Tree to 15 m tall and 50 cm dbh, shoots glabrous when mature. Leaves evergreen, leathery, elliptic to ovate, to 17 cm long and 9 cm across, tapered to a fine point at the apex, round to broadly tapered at the base. Margin thickened and whitish, edged with up to 6 prominent teeth on each side that end in long bristle tips. They are downy on both sides when young, becoming glossy dark green and glabrous above with hairs along the veins, paler beneath, glabrous except for tufts of hairs in the vein axils. Petiole to 6 cm long, often flushed with red. Fruits borne singly or in small clusters on a short peduncle. Cupule hemispherical to top-shaped, to 6 mm long and 12 mm across, acorns ovoid, to 20 × 10 mm, included ⅓ to ½ in the cup and ripening the first year. (Trelease 1924; Romero Rangel 2006).

Distribution  Mexico Baja California Sur, Chihuahua, Durango, Sinaloa, Sonora

Habitat Oak and pine-oak forest at 800–1800 m.

USDA Hardiness Zone 7

RHS Hardiness Rating H4