Common Alder - Alnus Glutinosa

I found this Common Alder (the latin name for which is Alnus Glutinosa) in Longford park. The bark is quite damaged on this particular Common Alder. The name glutinosa derives from the twigs being rather sticky when they are young. Due to it being early spring, there are no leaves present, however, there are cones present as you can see below. These cones are female catkins and although they are reddish-purple at first, turn green eventually (usually in bunches of 3-8) to form hard green cones which grow through the summer. The yellow anthers are male catkins which means this tree has both male and female traits.
Information from Collins Complete Guide to British Trees