Visit us at

Diatoms of the United States is now known as Diatoms of North America.
This site has been redesigned and updated, and will be closing soon.


Platessa kingstonii

Potapova 2012      Category: Monoraphid

Platessa hustedtii


Platessa lutheri

SEM scalebar = 2 ┬Ám

Site ID: ANSP GCM4482

Site Name: Middle Branch of Big Run, PA

Latitude: 41.19

Longitude: -77.77

Caption: External view if rapheless valve

Contributor: - January 2012