Ericaria selaginoides (syns.

Cystoseira tamariscifolia, Carpodesmia tamariscifolia) is a large marine brown algae.

[1] Ericaria selaginoides occurs in the Northeast Atlantic and Western Mediterranean Sea.

It forms a species complex with Ericaria amentacea, a similar but caespitose species from the Mediterranean and the Azores.

[2]