Quercus × firmurensis Hy

France; Spain (Navarra, Cataluña);

tree or shrub;

5-7 x 3.55 cm, semi-evergreen, leathery, elliptic-obovate; dark, glabrescent above, with stellate pubescence when young; densely tomentose beneath, especially along midrib (same types of hairs as in Q. pubescens, plus stipitate fasciculate trichomes); lobes irregular, simple, obtuse; apex acute; base cordate, slightly asymmetrical; 5-6 vein pairs, with sinusal veins; tertiary veins evident; petiole 0.5-,51 cm, tomentose;

acorn stalkless or with a peduncle shorter than the petiole; cup with pubescent, greyish scales;

– The today’s Spanish Authors (F.M.Vazquez & al.) consider this taxon as the hybrid between Q. pyrenaica and Q. pubescens subsp lanuginosa . – For some Authors, Q.x firmurensis = Q.humilis subsp lanuginosa (Lam.) Franco and Lopez 1987…, thus = Q. pubescens subsp palensis sensu O.Schwarz;