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Diatoms of the United States is now known as Diatoms of North America.
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Psammothidium acidoclinatum

(Lange-Bert.) Lange-Bert. 1996      Category: Monoraphid
BASIONYM: Achnanthes acidoclinata

Prestauroneis protracta


Psammothidium alpinum

LM scalebar = 10 ┬Ám

Slide Number: ANSP GC58679

Site ID: ANSP GCM4254

Site Name: Angel Falls, PA

Latitude: 41.39346

Longitude: -76.67710

Caption: rapheless valve

Contributor: Marina Potapova - August 2010