Asker Nature Reserve

Elm – The only tree that has an asymmetrical leaf base.

4–9cm in length. They are round to oval, toothed with a rough, hairy surface. They have a characteristic asymmetrical base and taper to a sudden point at the top.


English elms are hermaphrodites, meaning both male and female reproductive parts are contained within the same flower. Flowers are dark pink to red and hang in tassels, appearing between February and March.


The flowers develop into tiny winged fruits, known as samaras. These are dispersed by wind.



elm leaves showing asymmetrical leaf base