The yew - Taxus baccata
The yew is a native tree and is found in old woodlands but more commonly in the artificial surroundings of demesnes and graveyards. An evergreen, the yew is a dramatic tree with its dark foliage and red berries which encase a single seed. The foliage is poisonous to livestock but not to deer. The seeds are also toxic, although the red casing is not. This explains why it is so often seen in churchyards, where there are no animals.