The absence of the oak and of all heaths east of the Ural may be noticed.
Though known in England, where it is the only indigenous species, as the British oak, it is a native of most of the milder parts of Europe, extending from the shores of the Atlantic to the Ural; its most northern limit is attained in Norway, where it is found wild up to lat.
60°, but on the slope of the Ural the 56th parallel is about its utmost range.
In Asia it is found on the Caucasus, but does not pass the Ural ridge into Siberia.
Russia; the Valdai tablelands, where all the great rivers of Russia take their rise; the broad and gently sloping meridional belt of the Ural Mountains; and lastly the Taimyr, Tunguzka and Verkhoyansk ranges in Siberia, which, notwithstanding their sub-Arctic position, do not reach the snow-line.