
Rowan or Mountain Ash (Sorbus aucuparia). Native in Ireland with grey stems, pinnate leaves with 14 or so leaflets on either side of a common stalk. White flowers in late spring are succeeded by red fruits. Clusters of red fruits are noticeable in autumn and winter and are often eaten by birds. Source: Dr Mary Forrest, UCD.
Mountain Ash, Right Side - March
Mountain Ash, Right Side - March
Mountain Ash, Right Side - March

Mountain Ash, Right Side - April

Mountain Ash, Right Side - April

Mountain Ash, Right Side - April

Mountain Ash, Right Side - April

Mountain Ash, Right Side - May

Mountain Ash, Right Side - May

Mountain Ash, Right Side - May

Mountain Ash, Right Side - June

Mountain Ash, Right Side - June

Mountain Ash, Right Side - September

Mountain Ash, Right Side - September

Mountain Ash, Right Side - September
Link: Wikipedia
Link: Google Images
Link: Royal Horticultural Society, UK
Link: North Carolina State University: catelogue of trees
Link: Keele University, Staffordshire, UK
Link: Plantdatabase.co.uk
Link: Video of Mountain Ash (5 mins) and another shorter 1 min video of Mountain Ash
Link: Google Streetview