Phacus helikoides Pochmann 1942

Division     Euglenophyta
Class     Euglenophyceae
Order     Euglenales
Family    Phacaceae
SynonymPhacus tortus var. helikoides (Pochmann) Huber-Pestalozzi; Phacus tortus var. tortuosus Skvortsov; Phacus sesquitortus Pochmann

    Cells spirally twisted twice with anterior end slightly narrow and forked; posterior end with straight, sharp cauda. Cells measure 97–119 µm long (including tail) and 34–51 µm wide, tail 41–53 µm long. Pellicular striae spiral; paramylon bodies discoid, 1-2 in central part.