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Ceramium virgatum Roth

Ceramium rubrum auctorum; Ceramium nodulosum

Description: Cartilaginous, usually bushy, brownish red to yellowish green fronds, to 300 mm long. Irregularly dichotomous, clothed with simple to repeatedly dichotomous ramuli. Usually completely coticated, branchlets markedly narrower than main axes, apices normally markedly hooked inwards (but straight in plants bearing tetrasporangia). Very variable in size, form and colour.
Habitat: On rock, shells and epiphytic, intertidal and shallow subtidal, generally distributed, abundant, one of the most ubiquitous marine algae in the north-eastern Atlantic.

Species list

Photographs © M.D. Guiry

Ceramium nodulosum
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