image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

 Euastrum cuneatum
Jenner

Euastrum Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species: Cell body medium in size, 90-101 μm long, 48-50 μm wide, L/W=2, isthmus 14-17 μm wide; semicells pyramid-shaped with narrowly flattened apex; lateral margins nearly straight or somewhat wavy; cell wall dotted or with many small pores, bulging inconspicuous (Illustrations of The Japanese Fresh-water Algae, 1977).

Euastrum cuneatum Jenner (or E. ansatum Ehrenberg ?), cell body (left) 90 μm long, 50 μm wide, L/W=1.8, isthmus 16 μm wide, x 640, Ukishima marsh (or bog), Tsugaike highland (Tsugaike Natural Park), Otari village, Nagano Pref., Japan, July 3, 2005 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Euastrum cuneatum
Cell body 86 μm long, 50 μm wide, L/W=1.7, isthmus 15 μm wide, x 640
Euastrum cuneatum Euastrum cuneatum
Cell body (right) 85 μm long, 50 μm wide, L/W=1.7, isthmus 16 μm wide, x 640
Euastrum cuneatum Euastrum cuneatum
Cell body 94 μm long, 52 μm wide, L/W=1.8, isthmus 17 μm wide, x 640
Euastrum cuneatum Euastrum cuneatum

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