Belongs to: ferns

Marsh fern Thelypteris palustris

Best time to see: Jun to Oct

Key facts

One of very few ferns that grow in really wet areas, such as fens and marshes

Consists of single, pale green bi-pinnate leaves, up to 150 cm tall, put up at intervals from a creeping rootstock

Spores ripen August–September

© Jeremy Dagley