Quercus × numidica Trab.

Algeria; 800-1000 m;

tall tree, with the habit of Q. afares

lately deciduous; resemble those of Q. afares , but slightly smaller and more coriaceous; reaching 10 cm long X 5 cm wide, with up to 10 veins pairs ; margin with shallow lobes ending in a short tooth; abaxially white tomentose;

in June;

acorn maturing mostly second year, in November; cup-scales more or less recurved; less abundant than those of Q. afares.

– Trabut has described 2 morphological forms for this hybrid, depending on the dominant parent; when Q. afares is dominant the leaves are like those of Q. afares but the bark is strongly corky, and this form is Q. x numidica. When Q. suber is dominant, the name of the hybrid is Q. x kabylica, rather difficult to distinguish from Q. suber , with small leaves (5 cm X 2 cm), 6-7 veins pairs and margins unlobed but with spiny teeth.