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On the Identity of Navicula (Frustulia) Rhomboides and Frustulia saxonica (Bacillariophyceae)

Horst Lange-Bertalot and Regine Jahn
Systematics and Geography of Plants
Vol. 70, No. 2, Fresh Water Algae: Taxonomy, Biogeography and Conservation (2000), pp. 255-261
DOI: 10.2307/3668644
Stable URL: http://www.jstor.org/stable/3668644
Page Count: 7
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On the Identity of Navicula (Frustulia) Rhomboides and Frustulia saxonica (Bacillariophyceae)
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Abstract

For more than a century Frustulia saxonica was considered to be an infraspecific variety of F. rhomboides. A search for the type of the basionym, Navicula rhomboides Ehrenberg, revealed that Navicula rhomboides is not a Frustulia. A lectotype is presented for N. rhomboides Ehrenberg. As a consequence twelve new nomenclatural transfers within the genus Frustulia have been proposed. From the original material of Frustulia saxonica Rabenhorst, type of the name of the genus, a lectotype is chosen from among the heteromorphic specimens which had been traditionally identified as F. rhomboides.

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