Quercus × duriensis Vila-Viçosa & al.

Portugal; Douro Basin;

tree

8-9 cm x 4.5-5.2; intermediate shape between those of the parents; oblong to obovate; base auricled; margin irregular with 7-8 unequal lobes pointed at apex, or crenate; abaxially pubescent to glabrescent, with trichomes uniformly scattered, stellate or multistellate; 7-8 veins pairs, sinusal veins frequent; petiole short (less 1 cm) or absent;

acorn a peduncle less than 6 cm long;