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.


Gomphoneis olivaceum

(Hornem.) P.A.Dawson ex R.Ross and P.A.Sims 1978      Category: Asymmetrical biraphid
BASIONYM: Ulva olivacea
SYNONYM(S): Gomphonema olivaceum (Hornem.) Bréb. 1838 

Gomphoneis minuta


Gomphoneis oreophila

LM scalebar = 10 µm

Slide Number: CU Diatom Herbarium JPK 0580

Site ID:

Site Name: Clark Fork River, MT

Latitude: 47.593104

Longitude: -115.358398

Contributor: Pat Kociolek - February 2011