Codium amphibium

Conferva alpina

Conferva glomerata

Conferva ericetorum

Chaetophora pisiformis / with / batrachospermum mon[iliform]e

Callithamnion versicolor

Chaetophora endivaefolia

Conferva zonata

Schizonema Wyattiæ

Conferva tortuosa

Enteromorpha clathrata

Rhodomenia bifida [= Rhodymenia bifida]

Chylocladia clavellosa, β sedifolius

Conferva polita

Dasya ocellata

Ex libris van J.G. Schoneveld van der Gloet

Diatoma marinum / on Ceramium rubrum

Schizonema implicatum

Conferva ægagropila

Conferva flaccida

Gelidium corneum / var. pulchellum

Vaucheria racemosa

Callithamnion thuyoides

Conferva arenosa / this conferva, a few years ago / covered whole areas in Oxfordshire / and Berkshire

Cystoseira barbata