Occurrence: Widely found in all types of slightly acidic to slightly alkaline waters, and not infrequently in plankton.
Left: Original graphic by Prof. Lenzenweger. Right: Photomicrograph by Angelika-Maria Opitz (St. Ulrich am Pillersee, Austria), handed over by Prof. Lenzenweger.
Copyright by Prof. Rupert Lenzenweger, Ried im Innkreis, Austria.