Cocconeis placentula Ehrenb.
Annotated by R. Patrick.

Montana: Missoula County: Above the slaughterhouse in Pattee canyon.
46.82653° N, 113.919198° W,
Datum: WGS 84. Uncertainty: 2290 meters. Coordinate Source: Digital Map.
In very shallow quiet stream.

S.R. Ames 22, Aug 26, 1940
With F. A. Barkley
OSC, Barcode: OSC-A-014430