Quercus uxoris McVaugh

Mexico, in the Sierra Madre del Sur (Jalisco, Colima, Guerrero, Chiapas, Oaxaca); 900 - 2500 m;

10-40 m, with trunk to 1 m in diameter, and more;

9-25 x 4-10 cm; lately deciduous; more or less leathery; elliptic or oval; apex acute or acuminate, aristate; base obtuse, rounded or acute; margin thick, rolled under, dentate-serrate, with 9-18 pairs of bristle-tipped teeth (2-8 mm long); yound leaves with yellowish tomentum; mature leaves shiny green, becoming glabrous above except near base of midrib; paler beneath with short, stalked, stellate trichomes scattered on the blade and yellowish stellate axil tufts; 10-14 vein pairs, straight, impressed beneath; epidermis pale green, smooth, papillose; petiole 1.2.4 cm long, pubescent;

in March; staminate catkins 6-12 cm long, hairy, with more than 70 flowers; pistillate flowers 1-2 on a 0.5-1 cm long rachis;

acorn 1.5-2 cm long, 1.5 cm wide, flattened at apex, apex covered with a fine, slightly golden tomentum; enclosed 1/3 or less by patelliform to slightly hemispherical cup, 1.5-2 cm wide, with pubescent appressed scales; maturing in 2 years from June to September;

not quite hardy; prefers dry sites;

– Sub-genus Quercus, section Lobatae, Series Erythromexicanae, Group Acutifoliae;