I had a meeting with someone at the Forestry Commission office in Aberfoyle at the southern edge of the Scottish Highlands, and saw this big oak not far from the car park. The ferns growing abundantly on its trunk are a species called polyopdy (Polypodium vulgare).

Details: Pen; 2018; 17.5 cm x 12.5 cm. Original sold; unframed print £25.

Included in the gallery Trees 1