Observations on Euastrum intermedium

Description: The cells are appr. two times longer than wide. The cell sides are loboid broadly rounded. The vertex lobes are protruding clearly, broadened on the ends and with a cut in the middle. In the center of the cell halves there are pairs of bumps which are covered with small warts. The central cuts are far opened towards the periphery.

Dimension: Length 55–80–(95) µm, width 30–45–(52) µm, L/W: (1.5)–1.7–2–(2.2).

Occurrence: Ubiquitous, prefers boreal areas (mountains), rather rare in Central Europe. Acidophilic alga in shallow waters between sphagnum.

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.