Quercus confertifolia Bonpl.

Mexico (Aguascalientes, Durango, Guanajuato, Jalisco, Michoacan, Nayarit, Sinaloa, Zacatecas); 1000 - 2500 m;

4-6 m tall, trunk to 30-50 cm in diameter;

3-10 x 1.5-3.5 cm; deciduous; subcoriaceous; elliptic-lanceolate; apex acute aristate; base acute to, rounded, sometimes oblique; margin entire, never toothed, not rolled under; shiny dark green above, glabrous or with small, scattered stellate and multiradiate trichomes; yellowish green beneath with sparse stellate, fascicled and glandular trichomes, glabrescent; epidermis bullate and papillose; 14-20 vein pairs, short and straight, slightly impressed above; petiole 4-9 mm long, glabrescent;

in July; staminate catkins 4.5 cm long, with few flowers, pubescent; female catkins very short, bearing 1-3 pubescent flowers;

acorn 1cm long, broadly ovate; singly or paired, on a peduncle less than 1 cm long; cup half-round 1-1.5 cm in diameter, rolled at rim, with small pale chestnut-brown scales, enclosing 1/2 of nut; maturing in 1 or 2 years, from November to January;

not quite hardy; prefers poor, rocky soils;

– A. Camus : n° 407; – Sub-genus Quercus, section Lobatae, Series Erythromexicanae; – Closely related to Q.crassipes but this one differs in having an even, persistent tomentum abaxially; – Q. mexicana var. glabrata Liebm. ex Seem. 1856 is a synonym of Q. salicifolia Née 1801