Athyrium filix-femina, Lady-fern, with plant gall

Athyrium filix-femina, Lady-fern, with plant gall

Observation - Athyrium filix-femina, Lady-fern, with plant gall. Description: Growing on a roadside bank. The tip of the frond is rolled into a mop-head which is a plant gall caused by a fly, Chirosia betuleti.

Growing on a roadside bank. The tip of the frond is rolled into a mop-head which is a plant gall caused by a fly, Chirosia betuleti.