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Open Access A new diatom (Bacillariophyceae) genus with two new species from New Mexico, USA

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A new diatom (Bacillariophyceae) genus and two new species are described from the arid region of the North American southwest. The new genus, Playaensis, and new species, P. circumfimbria and P. furtiva, are distinguished by frustule morphology and autecology. Playaensis possesses unique, narrowly lunate longitudinal ribs bordering the raphe and spathulate spines, but their evolutionary relationship to known genera is unclear. In Payton Lake, New Mexico, P. circumfimbria and P. furtiva are rare in the diatom community, and their geographic and geological extent are not known, but they may be restricted to alkaline, slightly saline lakes of the region.
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Keywords: Bacillariophyceae; Naviculales; Playaensis circumfibria; Playaensis furtiva; phylogeny; playa lakes

Document Type: Research Article

Affiliations: 1: Diatom Collection, California Academy of Sciences, Golden Gate Park, San Francisco, CA 94118, USA 2: Surface Water Quality Bureau, New Mexico Environment Department, Santa Fe, NM 87502, USA

Publication date: 01 March 2002

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