Quercus charcasana Trel. ex A.Camus

Mexico, en la Sierra Madre Oriental (Charcas,San Luis Potosi) ;

less than 3 m tall;

3-4 cm mm X 1.2-1.5; deciduous; sublanceolate; apex acute aristate; base narrowly cordate, rounded; entire or asymmetrically toothed, with some rare short teeth; midrib raised both sides; 8 vein pairs, inconspicuous above; petiole 2-4 mm long;

pistillate ones with 3 hairy styles, perianth thick, stigmas recurved;

acorn almost entirely enclosed in cup, mucronate;

– A. Camus : tome 3, n° 371; – Sub-genus Quercus, Section Lobatae; – For today’s Mexican Authors (Susana Valencia-A., 2004), this species described by Trelease is not currently valid ; it may be a hybrid, or a morpholigical variety…