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THE ESSEX NATURALIST
Dictyosiphonales
Punctariaceae
Punctaria plantaginea (Roth.) Grev. Harwich, Batters (1894).
Scytosiphonales
Scytosiphonaceae
Petalonia filliformis (Batt.) Kunze. Clacton, Batters (1894).
Scytosiphon lomentarius (Lyngb.) Link. Harwich, Batters (1894).
Cutleriales
Cutleriaceae
Cutleria multifida (Sm.) Grev. Harwich, Batters (1894).
Laminariales
Chordariaceae
Chorda filum (L.) Stackh. Harwich Harbour, Batters (1894); River
Blackwater (Mersea Quarters, Cocum Hills, Colne Point), G.M.M.,
1963.
Laminariaceae
Laminaria hyperborea (Gunn.) Foslie. Harwich, G.M.M., 1964.
Laminaria saccharina (L.) Lamour. Harwich, Blackwater Estuary,
Clacton, Batters (1894); Blackwater Estuary (Osea Island, Cocum
Hills, Colne Point, Mersea, Nass End Beacon), Harwich, G.M.M.,
1963-64.
Sphacelariales
Sphaleriaceae
Sphacelaria plumigera Holm. Harwich, Dovercourt, Batters (1894).
Sphacelaria plumosa Lyngb. River Blackwater (St. Osyth, Cocum
Hills, Stoney Point, Mersea Shore), Harwich, G.M.M., 1963-64.
Stypocaulaceae
Halopteris scoparia (L.) Sauv. Walton, Batters (1894), as Stypo-
caulon scoparium.
Cladostephus spongiosus (Huds.) C. Ag. Felixstowe, Harwich,
Batters (1894); Osea Island, Clacton, G.M.M., 1964.
Dictyotales
Dictyotaceae
Dictyota dichotoma (Huds.) Lamour. Walton, Felixstowe, Batters
(1894). Blackwater Estuary, G.M.M., 1963-64.
Padina pavonia (L.) Lamour. Harwich, Batters (1894).
Taonia automaria (Woodw.) J. Ag. Felixstowe, Batters (1894).
Fucales
Fucaceae
Ascophyllum nodosum (L.) Le Jol. Harwich, Blackwater Estuary,
Dovercourt and Clacton, Batters (1894); Blackwater Estuary (f.
scorpiodes), Baker and Bohling (1915); River Blackwater, Osea
Island (f. scorpiodes), G.M.M., 1963-64.
Fucus ceranoides L. Blackwater Estuary, Batters (1894); River
Blackwater, G.M.M., 1963, 1964.