Ash is a deciduous
tree with a single trunk up to 40 m in height, with a greenish-grey
bark, deeply fissured with age. It is found very commonly in woods
and hedgerows, especially on lime-rich and heavy soils.
The buds, in opposite
pairs at the base of each leaf, are black.
Bunches of petalless
male and female flowers grow on separate twigs on the same tree
showing purple before the leaves appear in June.
The pale brown
fruits or 'keys', which blow away in the wind, consist of a single
seed surrounded by a wing.