sample taken from Clear Lake near boat docks. Imaged with Foldscope low magnification lens
There is a missing piece to this diatom.
Epiphyte on Cladophora filament growing on snail (Elimia) along shore of Potomac R.
Significant nuisance mat growth from Libby Dam to Fisher River bridge.
Gobs of didymo floating in the Yellowstone River below confluence with Boulder River