Adder's-tongue Fern | Reserves and species

Scientific Name:

Ophioglossum vulgatum

Adder's-tongue Fern is an unusual fern that grows in old grasslands, on hillsides, along woodland rides and on sand dunes. It usually appears between June and August, spending the rest of the year underground as a rhizome. It is considered a good indicator species of ancient meadows and can be found alongside Common Spotted-orchids, Quaking Grass and Devil's-bit Scabious.

How to identify:

With its bright green, oval and upright frond, and its single, tall spike bearing the spores, the Adder's-tongue Fern is unmistakeable. It mostly only has one frond, but sometimes has a pair.

Where to find it:

Widespread but localised distribution and not very common.

How people can help:

The Wildlife Trusts manage many grassland and woodland edge habitats sympathetically for the benefit of all kinds of species, including the Adder's-tongue Fern. Careful grazing with traditional breeds, hay-cutting at the right time and scrub clearance are just some of the ways grasslands are kept in good condition - supporting numerous plants and invertebrates and, in turn, the larger animals that eat them. By volunteering for your local Trust you can help too, and you'll make new friends and learn new skills along the way.

Statistics:

Height: 10-20cm

Conservation status:

Scarce.

Did you know?:

There are two other closely related ferns, the Small Adder's-tongue and the Least Adder's-tongue, both of which are much smaller and rarer, and only found at a few places around the south-west of England.

Seasons:

Summer

When to see

Start date:

June

End date:

August

Image: