Frond length up to 1.2m. Plant height 1.2m. Plant spread 1m. This is a large, clump-forming fern of which its fronds remain green throughout the winter months and is semi-evergreen. The fronds are of an upright, slender nature, and bipinnately (2-times) divided. The pinnules have rounded tips and have serrated margins. The stalks have brownish scales.
Spore ripening time August to November. Found in woodland, ditches, and on banks, favouring damp and shady areas. It is a common and widespread species throughout Britain.