Cypress Oak,

Quercus robur 'Fastigiate Koster' from the Fagaceae family, deeply grooved dark grey bark, upright branches produce a pyramidal shape, deciduous, similar to English Oak.  Strong, grows to 15m in height, 5m in width, columnar crown, catkins, producing acorns which remain on the tree throughout winter, frost resistant, leaves grow up to 14cm, leaves turn dark brown in Autumn, Feature Tree for parks and gardens.  Attracts butterflies.