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Diatoms of the United States is now known as Diatoms of North America.
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Nupela frezelii

Potapova 2011      Category: Symmetrical biraphid

Nupela fennica


Nupela impexiformis

SEM scalebar = 2 ┬Ám

Site ID: ANSP NRSA0888

Site Name: Pawtuxet River, RI

Latitude: 41.71960

Longitude: -71.47102

Caption: External view of raphe valve

Contributor: - October 2010