Oak tree identification
Oaks are in the genus Quercus which is in the Beech family. There are more than 600 species worldwide. There are two native oaks in Britain, the English Oak and the Sessile Oak . Three more oaks are shown here but there are many more species in parks, urban settings or botanical gardens in Britain. These five species show many of the key characteristics of the oak genus. Oak tree identification – English, Sessile,Turkey have lobed leaves, Holm and Cork have evergreen leaves, all 5 have male catkins and acorns.
Leaves are often but not always lobed, male and female flowers are on the same tree. Male flowers are on catkins and release pollen onto the wind. Female flowers are tiny and difficult to see. Fruits are in the form of acorns with nuts sitting in ‘cups’.
The English Oak leaf has a very short stalk, hidden by two small leaves known as “ears” at the base of the leaf.
Sessile Oak acorns have no stalk. They sit on the shoot like this – a feature that is known as ‘sessile’ by botanists.