A cercozoan flagellate that lives in large colonies, embedded in a matrix of brown or golden spherules. The colonies I find in Mer Bleue samples are usually round. Cells are tiny (5-7 μm), generally ovoid when inside the colony and roughly spherical when swimming. Each cell has two long flagella.
They are related to Rhipidodendron, which flourishes in the same water. For an interesting discussion of two species of Spongomonas see Strueder-Kypke, 1998: http://www.sciencedirect.com/science/…
From a dystrophic lake in Mer Bleue bog conservation area.
1000X, 200X
