Hilliar's Manual of Trees and Shrubs from England. Fourth Edition
Quercus robur L. (pedunculata). "Commom Oak"; "English Oak".
This is the better known and more widely distributed of our two native species,
the other being Q. petraea. A large, long lived tree, developing a broad
head of rugged branches when growing in the open. Leaves sessile or almost so,
shallowly-lobed and auricled at the base. Fruits one to several on a slender stalk.
Almost all the ancient "named" oaks in the Bristish Isles belong to this species
rather than Q. petraea. Europe; Caucasus; Asia Minor; N. Africa.