Ceramium virgatum
# Ceramium virgatum

Ceramium virgatum, or the red hornweed, is a small red marine alga.

## Description

This small alga grows erect with cylindrical filamentous axes. It is repeatedly branched, corticate and grow to 30 cm long. Very difficult to identify from some other species.

## Habitat

Common in rock pools and in the upper sub-littoral in a wide range of habitats.

## Distribution

Widely distributed around the British Isles including the Isle of Man and the Shetland Islands.

## Nomenclature

The non-spiny species of Ceramium are in taxonomic chaos and there is confusion concerning this species which is referred to as Ceramium nodulosum in some references.

