Quercus petraea - Sessile Oak
Its bark is grey with fine, vertical cracks and ridges.
The sessile oak is widespread, particularly in North and West Britain.
Quercus robur - Pedunculate Oak
Its bark is pale grey and cracked into short, narrow, vertical plates.
The pedunculate oak is widespread in lowlands, parks, woods and gardens.
Quercus cerris - Turkey Oak
Its bark is dull grey, with deep cracks forming small dark plates.
The turkey oak is found in hedgerows and parks and is more common in the South.