Quercus coffeicolor Trel.

Mexico (Jalisco, Nayarit, Sinaloa); 900-1900 m;

3-10 m tall; trunk to 20-30 cm in diameter; spreading crown;

6-12 cm long; 3-4 wide; deciduous; subcoriaceous; elliptic, oblong or oval; apex subacute, bristle-tipped; base rounded or subcordate, sometimes cuneate, often asymmetrical; margin entire, slightly thickened, flat, bristle-tipped at apex; shiny blue green, hairless above; yellowish coffee coloured beneath, hairless except axils hairtufts ; 6-8 veins pairs; epidermis smooth and papillose; petiole 1-2 cm long, hairless, reddish;

in February or March; male catkins 5-10 cm long, with hairless axis, many flowered; pistillate flowers 1 to 4, on a 1 cm long hairless peduncle;

acorn ovoid, 0.7-1.2 cm long, 1 to 4 together; very short stalk (less than 1 cm); enclosed 1/3 or less by cup; cup campanulate 0.7-1.5 cm in diameter; maturing in 1 year from June to September;

on rocky, dry soils;

– A. Camus : n° 347; – Sub-genus Quercus, section Lobatae, Series Erythromexicanae – Also written “ prainiana “ (Sylvia Romero Rangel); – For some Authors (Susana Valencia Avalos, Sylvia Romero Rangel), the synonymy is the same, but Q.praineana is the accepted name.