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Common Spike-rush

©Neil Wyatt

Common spike-rush

Forming mats of straight, bright green stems, Common spike-rush does, indeed, look like lots of tightly clustered 'spikes' near the water's edge of our wetland habitats.

Enw gwyddonol

Eleocharis palustris

Pryd i'w gweld

January to December

Species information

Categori

Ystadegau

Height: up to 60cm
Common.

Cynefinoedd

Ynghylch

A creeping plant found on marshes and at pond edges, Common spike-rush is widespread and common sedge. Its bright green stems arise in tufts and are decorated with brown, egg-shaped flowers from May to July. It spreads using rhizomes (underground stems) and can form dense stands.

Sut i'w hadnabod

Common spike-rush forms mats of bright green, upright stems. At the end of the stems, the rounded, brown spikelet (containing the flowers) appears.

Dosbarthiad

Widespread.

Roeddech chi yn gwybod?

The leaves of Common spike-rush are reduced to sheaves around the stems, so it looks as if it has none at all.