Sample taken September 9, 2024 from biofilm scraped off a submerged log in Battle Ground Lake.
From sample taken August 10, 2024.
Collected in boggy water with peat moss. Great Meadow, Isle Au Haut, Maine, 8/24/2024.
Collected from Long Pond, Isle Au Haut, Maine, 8/23/2024. Growing on surface of shallow lake, including filamentous algae.
Sorry for the bad photo, my microscope is without a bulb.
From sample taken 7/29/2024
Collected from floating aquatic masses in wetland among emergent plants. Dodge County, Wisconsin. 7/14/2024.
Collected in Sphagnum pool alongside Bearskin Lake State Trail, Minocqua, Wisconsin, 7/3/2024.
Cow horn shaped diatom-like organism with longitudinal striations from end-to-end.
The site is a sphagnum bog that abuts a pond.
mag. 400x
Similar to Gloeocapsa pictured here https://www.flickr.com/photos/johngiez-/4465267701.
Not certain about the ID. No multi-laminations are visible in the sheaths. Colony appears to be an aggregate of multiple sheathed units, most often a unit appears to contain 2 cells. (Compare views at different focal plans in the second image (a composite). When in focus, the cells appear to have a granular/punctate surface; see the last image.