image_list image_listE

Chlorophyceae: Chlorococcales: Scenedesmaceae

 Crucigenia tetrapedia
(Kirchner) W. et G.S. West

Crucigenia Genus: Arrangement of 4 daughter cells flat and rectangular in shape, forming composite coenobium; without gelatinous sheaths, no hairly projections (Illustrations of the Japanese Freshwater Algae, 1977).
Species: Colonies of 4 cells; cell body triangular in shape, 4-10 μm wide; a single chloroplast plate-like, with a pyrenoid (Illustrations of the Japanese Freshwater Algae, 1977).

Crucigenia tetrapedia, colony disc-shaped, 16 μm in diam., cell body 5.5 μm long, 2.3 μm wide, x 400, x 640, Shinobazu-ike (pond), Ueno, Taito-ku, Tokyo, Japan, March 2001 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Crucigenia Crucigenia

Please click on images for viewing enlarged.
Copyright Protist Information Server