The Prokaryotes pp 4098-4101 | Cite as

The Genus Pelosigma

  • Peter Hirsch


The Danish scientist E. Warming observed, during a walk along Kallebo Beach in 1874, a reddish discoloration of mud and decaying algae. His microscopic investigation of a sample started the now-famous study of “bacteria living on Denmark’s coasts” (Warming, 1875). One of the organisms he found in “stinking mud at the height of decay” at several locations was a highly unusual, flat and striated, motile “bacterium” (which he called Spiromonas cohnii) that resembled a flagellate Spiromonas previously described from Switzerland. Although Warming himself was not quite sure of what he saw, his drawings are remarkably accurate illustrations of bacteria that can still be found in hypolimnia and on anaerobic sediment surfaces.


Determinative Bacteriology Swedish Lake Reddish Discoloration Kellogg Biological Station Characean Alga 
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Literature Cited

  1. Hirsch, P. 1974. Genus Pelosigma Lauterborn, 1913, p. 215216. In: Buchanan, R. E., and Gibbons, N. E. (ed.), Bergey’s manual of determinative bacteriology, 8th ed. Baltimore: Williams & Wilkins.Google Scholar
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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • Peter Hirsch

There are no affiliations available

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