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XXVI.—Staurastrum paradoxum Meyen and S. gracile Ralfs in the British Freshwater Plankton, and a Revision of the S. anatinum-group of Radiate Desmids

Published online by Cambridge University Press:  06 July 2012

A. J. Brook*
Affiliation:
Freshwater Fisheries Laboratory, Pitlochry, Scotland.

Synopsis

An attempt has been made to determine the identity of two desmids commonly recorded from the plankton of British lakes, Staurastrum paradoxum and S. gracile. The original descriptions of these species were clearly inadequate and many subsequent investigators have given their own interpretation as to their identity, so that from the British plankton alone at least six well-defined taxa have been referred to as S. paradoxum and four as S. gracile. Owing to this confusion, and in the absence of type material, it is suggested that the species S. paradoxum cannot be maintained. On the other hand, type material of S. gracile exists in the British Museum and has been re-examined. The principal characters of this species are described and figured and a list of synonyms given. In addition, those Staurastrum species and varieties frequently misnamed paradoxum or gracile, have been described in detail.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1959

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Footnotes

Department of Botany, University of Edinburgh.

*

This paper was assisted in publication by a grant from the Carnegie Trust for the Universities of Scotland.

References

References to Literature

Bachmann, H., 1907. “Vergleichende Studien uber das Phytoplankton von Seen Schottlands und der Schweiz”, Arch. Hydrobiol. (Plankt.), 3, 191.Google Scholar
Baldi, E., 1946. “Isolamento e Differenziazione in Popolazioni Plactiche d'Acqua Dolche”, Experientia, 2, 215.10.1007/BF02137566Google Scholar
Brook, A. J., 1958 a. “Desmids from the Plankton of Some Irish Loughs”, Proc. Roy. Irish Acad., B, 59, 7191.Google Scholar
Brook, A. J., 1959 a. “The Status of Desmids in the Plankton and the Determination of Phytoplankton Quotients”, J. Ecol., 47, 429445.10.2307/2257375Google Scholar
Brook, A. J., 1959 b. “The Published Figures of the Desmid S. paradoxum Meyen”, Rev. Algol., 4. [In the press.]Google Scholar
Brook, A. J., 1959 c. “Notes on Desmids of the Genus Staurastrum III. S. paradoxum Meyen in the Jenner Herbarium of the British Museum”, Naturalist, Lond., July-Sept. 1959, 8183.Google Scholar
Croasdale, H. T., 1957. “Freshwater Algæ of Alaska. I. Some Desmids from the Interior”, Pt. III, Trans. Amer. Micr. Soc., 76, 116158.10.2307/3223626Google Scholar
Fritsch, F. E., 1953. “Comparative Studies in a Polyphyletic Group, the Desmidiaceæ”, Proc. Linn. Soc., 164, 258280.10.1111/j.1095-8312.1953.tb00692.xGoogle Scholar
Griffiths, B. M., 1925. “Studies in the Phytoplankton of the Lowland Waters of Great Britain. III. The Phyto plankton of Shropshire, Cheshire and Staffordshire”, J. Linn. Soc. (Bot.), 47, 7598.Google Scholar
Griffiths, B. M., 1926 a. “Studies in the Phytoplankton of the Lowland Waters of Great Britain. IV. The Phytoplankton of the Isle of Anglesey and of Llyn Ogwen, N. Wales”, J. Linn. Soc. (Bot.), 47, 355366.Google Scholar
Griffiths, B. M., 1926 b. “Studies in the Phytoplankton of the Lowland Waters of Great Britain. V. The Phytoplankton of Some Norfolk Broads”, J. Linn. Soc. (Bot.), 47, 595612.10.1111/j.1095-8339.1927.tb00524.xGoogle Scholar
Grönblad, R., 1920. “Finnlandische Desmidiaeeen aus Keuru”, Acta Soc. Fauna Flora Fenn., 47, 398.Google Scholar
Irénée, Marie Fr, 1939. Flore Desmidiale de la Region de Montreal. Laprarie, Canada. 547 pp.Google Scholar
Lind, E. M., and Pearsall, W. H., 1945. “Plankton Algæ from North-western Ireland”, Proc. Roy. Irish Acad., B, 50, 311320.Google Scholar
Nordstedt, O., 1906. “Algological Notes. I. The Starting Point of the Nomenclature of Desmids”, Bot. Notiser., 1906, 97124.Google Scholar
Nygaard, G., 1945. Dansk Plante Plankton. Copenhagen. 52 pp.Google Scholar
Nygaard, G., 1949. “Hydrobiological Studies of Some Danish Ponds and Lakes. II. The Quotient Hypothesis, and Some New or Little-known Phytoplankton Organisms”, Biol. Skr., 7, 1293.Google Scholar
Pearsall, W. H., 1932. “Phytoplankton of the English Lakes. II. The Composition of the Phytoplankton in Relation to Dissolved Substances”, J. Ecol., 20, 241262.Google Scholar
Ralfs, J., 1848. The British Desmidiece. London. 226 pp.Google Scholar
Reynolds, N., 1940. “Seasonal Variations in Staurastrum paradoxum Meyen”, New Phytol., 39, 8689.Google Scholar
Silva, P. C., 1958. “Later Starting Points in Algæ”, Taxon, 7, 181184.10.2307/1216399Google Scholar
Skuja, H., 1948. “Taxonomie des Phytoplanktons Einiger Seen in Uppland, Schweden”, Symb. Bot. Upsaliens, 9, 397 pp.Google Scholar
Skuja, H., 1956. “Taxonomische und biologische Studien uber das Phytoplankton schwedisher Binnengewasser”, Nova Acta Soc. Sci. Upsal., 16, No. 3, 1404.Google Scholar
Smith, G. M., 1922. “The Phytoplankton of the Muskoka Region, Ontario, Canada”, Trans. Wise. Acad. Sci. Arts Lett., 20, 323346.Google Scholar
Smith, G. M., 1924. “Phytoplankton of the Inland Lakes of Wisconsin II”, Bull. Univ. Wise, 1270, 1227.Google Scholar
Teiling, E., 1942. “Schwedische Planktonalgen 3”, Bot. Notiser, 1942, 6368.Google Scholar
Teiling, E., 1946. “Zur Phytoplanktonflora Schwedens”, Bot. Notiser, 1946, 6188.Google Scholar
Teiling, E., 1947. “Staurastrum planctonicum and S. pingue, A Study of Planktic Evolution”, Svensk Bot. Tidskr., 41, 218234.Google Scholar
Thomasson, K., 1957. “Contribution to the Knowledge of the Plankton in Scandinavian Mountain Lakes, 4”, Bot. Notiser, 110, 251264.Google Scholar
West, G. S., and Carter, N., 1923. British Desmidiacece. Vol. V. London, Ray Society.Google Scholar
West, W., and West, G. S., 1905 a. “A Further Contribution to the Freshwater Plankton of the Scottish Lochs”, Trans. Roy. Soc. Edin., 41, 477518.10.1017/S0080456800035481Google Scholar
West, W., and West, G. S., 1905 b. “Freshwater Algæ from the Orkneys and Shetlands”, Trans. Bot. Soc. Edin., 23, 341.Google Scholar
Worthington, E. B., and Macan, T. T., 1951. Life in Lakes and Rivers. London. 272 pp.Google Scholar