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Ceramium nitens (Ceramiaceae, Rhodophyta), an uncommon species from Brazil

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Author(s): FUJII MUTUE TOYOTA | COCENTINO ADILMA L.M. | PEREIRA SONIA M. B.

Journal: Revista Brasileira de Botânica
ISSN 0100-8404

Volume: 24;
Issue: 3;
Start page: 359;
Date: 2001;
Original page

Keywords: Rhodophyta | Ceramium nitens | morphology | taxonomy | geographic distribution

ABSTRACT
Morphological studies on Ceramium nitens (C. Agardh) J. Agardh, a completely corticated species, were carried out based on specimens rediscovered in Brazil fifty years after its first record. Its occurrence in Brazil was considered doubtful since it had been collected only once since 1945. Ceramium nitens can be recognized by having axial cells entirely covered by cortical cells, except for the cells near the apex, obscuring the nodal and internodal banding thalli, characteristic of most Ceramium species. In this paper the occurrence of Ceramium nitens in Brazil is confirmed and its vegetative and tetrasporangial structures are described in detail and their implications for the taxonomy of the genera Ceramium, Centroceras and Corallophila are discussed. Brief comments on the geographic distribution of C. nitens are also included.
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