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The Essex Naturalist
P. tetras (Ehrenb.) Ralfs (S & B 1962)
Scenedesmus aculeolatus Reinsch
S. acuminatus (Lagerh.) Chod. (coll. S & B
1979)
S. acuminatus (Lagerh.) Chod. fo. tortuosus
(Skuja) Korsh.
S. armatus Chod.
S. disciformis (Chod.) Fott & Korn.
S. grahneisii (Heynig) Fott
S. obliquus (Turp.) Kutz.) (Sc)
S. opoliensis P. Richt. (B & S)
S. quadricauda (Turp.) Breb.)
(B&S 1962, C1893)
S. semipulcher Hortob.
S. sempervirens Chod.
S. serratus (Corda) Bohl.
Siderocelis ornata (Fott) Fott
Sphaerocystis planktonica (Korsh.) Bourr.
Tetraedron caudatum (Corda) Hansg.
T. incus (Teil.) G. M. Smith (coll. S & B
1979)
T. minimum (A. Br.) Hansg.
Tetrastrum glabrum (Roll) Ahlstr. & Tiff.
T. staurogeniaeforme (Schrad.) Lemm.
Chlorophyta, Ulotrichales
Catena viridis Chod.
Koliella longiseta (Vischer) Hindak
Chlorophyta, Conjugates
Cosmarium bioculatum Breb.
Staurastrum tetracerum Ralfs
Prasinophyceae
Tetraselmis cordiformis Stein
Xanthophyta (nomenclature follows Ettl
197S)
Centritractus belonophorus Lemm.
Goniochloris contorta (Bourrelly) Ettl
G. fallax Fott (coll. S & B 1979)
Trachydiscus lenticularis Ettl
Chrysophyta (nomenclature follows Huber-
Pestalozzi 1941)
Anthophysa vegetans (Mull.) Stein (Sc 1944)
Chrysococcus rufescens Klebs (Sc 1944)
Dinobryon Sertularia Ehrenb.
Pedinelia hexacostata Vysotskii (coll. S & B
1979)
Dinophyta
Cerarium hirundinella Ehrenb. (coll. S & B
1979)
Gymnodinrum aeruginosum Stein
Haptophyta
Hymenomonas roseola Stein (coll. S & B
1979)
Euglenophyta (nomenclature follows Huber-
Pestalozzi 1955)
Euglena acus Ehrenb. (Sc 1944)
E. Spirogyra Ehrenb. (Sc 1944)
E. tripteris (Duj.) Klebs (Sc 1944)
Phacus acuminatus Stokes
P. longicauda (Ehrenb.) Duj.
P. pseudonordstedtii Pochm.
Trachelomonas hispida (Perry) Stein em Defl.
(Sc 1944)
T. volvocina Ehrenb. (Sc 1944)
T. volvocinopsis Swir.
Cyanophyta (nomenclature follows Huber-
Pestalozzi 1938)
Chroococcus limneticus Lemm.
Microcystis aeruginosa Kutz.
M. stagnalis Lemm.
We would very much like to hear of any published lists of Essex freshwater algae
other than those listed here.
References
Cooke, M C.1893. The freshwater algae of Essex; a preliminary list of recorded species. Essex
Naturalist 7: 170-179.
Ettl, H, 1978. Susswasserflora von Mitteleuropa. Vol. 3, part 1. Xanthophyceae. Gustav Fischer,
Stuttgart.
Huber-Pestalozzi, G, 1938. Das Phytoplankton des Siisswassers. Vol. 16, part 1 Blaualgen,
Bakterien, Pilze. Schweizerbart, Stuttgart.