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Brazilian Journal of Botany

Print version ISSN 0100-8404On-line version ISSN 1806-9959


WERNER, Vera Regina  and  SANT'ANNA, Célia Leite. Occurrence of the rare genus Microcrocis P. Richter (Chroococcales, Cyanobacteria) in a coastal lagoon from southern Brazil. Rev. bras. Bot. [online]. 2006, vol.29, n.1, pp.183-186. ISSN 0100-8404.

The paper records the first occurrence of the genus Microcrocis P. Richter (Chroococcales, Cyanobacteria), represented by M. pulchella (Buell) Geitler, in Brazil. The species was found in two zones, one with freshwater and the other with brackish water, of a coastal lagoon of Rio Grande do Sul State (31°15’-31°30’ S and 50°54’-51°09’ W). Comparison between M. pulchella and its most closely related species is presented. Up to now this species had occurrence records limited to freshwater systems in temperate regions. Its presence in a subtropical coastal lagoon from southernmost Brazil, either in fresh or in brackish water, broadened the knowledge of the distribution area of M. pulchella.

Keywords : Brazil; coastal lagoon; Cyanobacteria; Microcrocis.

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