Rhodomela pinastroides

Polysiphonia simulans

Enteromorpha compressa. var.

Griffithsia multifida / var. pilifera

Chylocladia articulata

Conferva carnea

Gelidium corneum / var. pinnatum

Callithamnion Arbuscular [= Callithamnion arbuscular]

Laurencia pinnatifida / v. angusta

Polysiphonia elongella

Ceramium nodosum

Rhodomela lycopodoides [= Rhodomela lycopodioides]

Gloiosiphonia capillaris

Ceramium rubrum

Callithamnion brachiatum

Rhodomenia palmetta [= Rhodymenia palmetta]

Polysiphonia thuyoides

Griffithsia secundiflora

Calothrix confervicola / parasitic

Polysiphonia spinulosa

Ceramium strictum

Ceramium decurrens

Nitophyllum punctatum / β [= var.] ocellatum

Fucus æruginosus Turner / "Red Sea. Lisbon"/ New to Britain

Callithamnion plumula