Genus: Unicellular, planktonic; cell body flat, triangular in shape, each point drawn out
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species: Unicells, planktonic; cell body flat, triangular in shape, 21-36 (-45) μm long; three ends prolonged in small hyaline rounded processes; laterally concave; body shape and arms highly variable, cell wall hyaline or dark brownish, smooth or granulated; usually two ribbon-like chloroplasts, or up to 12 chloroplasts irregularly arranged, each without pyrenoids (Photomicrographs of the Freshwater Algae, vol. 13, 1994). |
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
