318
THE ESSEX NATURALIST
Enteromorpha compressa (L.) Grev. Walton, Clacton, Batters (1894);
Canvey Island, Carter (1933); River Blackwater (Osea Island, East
Mersea Stone), G.M.M., 1963.
Enteromorpha intestinalis (L.) Link. River Blackwater, Harwich
and Felixstowe, Batters (1894); River Blackwater, G.M.M., 1963-64.
Enteromorpha linza (L.) J. Ag. Harwich, Batters (1894).
Enteromorpha marginata J. Ag. Clacton, Batters (1894) (as E.
canaliculata Batt).
Enteromorpha prolifera (O. F. Mull.) J. Ag. Canvey Island, Carter
(1933); River Blackwater (Mersea saltmarshes, St. Peters Flats),
G.M.M., 1963.
Enteromorpha ramulosa (Sm.) Hook. Clacton, Batters (1894);
Fingringhoe Wick, River Blackwater, G.M.M., 1963.
Enteromorpha torta (Mert.) Reinb. Fingringhoe Wick, River Black-
water (Mersea saltmarshes, Bradwell Creek, Osea Island, East
Mersea, Stone, St. Peters Flats), G.M.M., 1963.
Enteromorpha usneoides J. Ag. St. Peters Flats (River Blackwater),
G.M.M., 1963.
Percursaria percursa (C. Ag.) Rosenv. Maldon, Wivenhoe, Mistley,
Clacton, Batters (1894); Canvey Island, Carter (1933) (as Entero-
morpha percursa).
Ulva lactuca L. Maldon, Harwich, Blackwater Estuary, Clacton,
Felixstowe, Walton Ferry, Batters (1894); Fingringhoe Wick, Clacton;
River Blackwater, G.M.M., 1963-64.
Chaetophorales
Chaetophoraceae
Epicladia flustrae Reinke. Felixstowe, Clacton, Batters (1894).
Acrosiphoniales
Acrosiphoniaceae
Spongomorpha aeruginosa CL.) Hook. Felixstowe and Harwich,
Batters (1894) (as Cladophora uncialis Harv.).
Urospora penicilliformis (Roth.) Aresch. Clacton, Batters (1894).
Chaetomorpha capillaris (Kutz.) Borg. Clacton, Batters (1894).
Chaetomorpha linum (O. F. Mull.) Kutz. Felixstowe, Southend,
Batters (1894); River Blackwater (Cocum Hills, Colne Point, Decoy
Point), G.M.M., 1963-64.
Chaetomorpha litorea (Harv.) Harv. Walton, Batters (1894).
Chaetomorpha melagonium Webb. et Mohr. Felixstowe, Batters
(1894); River Blackwater (Cocum Hills, Colne Point, Ray Creek,
Bradwell Creek, Decoy Point), G.M.M., 1963.
Cladophorales
Cladophoraceae
Cladophora albida (Huds.) Kutz. Felixstowe, Harwich and Dover-
court, Batters (1894); River Blackwater (St. Peters Flats), G.M.M.,
1963.
Cladophora flexuosa (O. F. Mull.) Harv. River Blackwater (St.
Peters Flats), G.M.M., 1963.