Description: The cells are about as long as wide and have a circular shape. The cell halves consist of three lobes. The lateral lobes are clearly separated. At the ends of the lateral lobes there are two outwards standing projections. Between the projections there is a concave area. The central cut is deep and peripherally strongly widened.

Dimension: Length (140)–150–200–(250) µm, width (120)–140–170–(210) µm, L/W (1.0)–1.1–1.2–(1.25).

Occurrence: In acidic to moderate acidic fens and bogs. Ubiquitous, rather rare in Central Europe.

Left: Original graphic by Prof. Lenzenweger.
Right: Photomicrograph by Prof. Lenzenweger. For microphotography, the microscope illumination was adjusted in such a way that as many features as possible that are important for species identification are prominently displayed.

Copyright by Prof. Rupert Lenzenweger, Ried im Innkreis, Austria.