The Brimstone is a medium large butterfly with leaf-shaped wings.

When this butterfly roosts among foliage, the angular shape and the strong veining of their wings closely resembles leaves.

There is a view that the word 'butterfly' originates from the yellow colour of male Brimstones.The wings of the female are very pale green, almost white, males have yellow-green underwings and yellow upperwings.

The butterfly ranges widely and can often be seen flying along roadside verges and hedgerows.  The Brimstone has also been seen at Wem Moss.

Brimstone butterfly at Wem Moss.  Photograph by Tim Walter.

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Colemere, near Ellesmere, is the only place in England where the Least Water-lily grows naturally

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