144417 Ash Fraxinus excelsior Oleaceae Height to 40m. Deciduous tree with open crown. Bark Grey, fissured with age. Branches Ascending; grey twigs flattened at nodes with conical black buds. Leaves Pinnate, to 35cm long with 7–13 lanceolate, toothed leaflets. Reproductive parts Flowers small, purple, clustered. Fruits are single-winged ‘keys’, in bunches. Status Common native; prefers calcareous or base-rich soils.