Gamophyceae:
Zygnematales: Desmidiaceae
Euastrum didelta
Ralfs var. didelta
Subgenus: Entomum (Apical area deeply indented or notched)
Section: Incisa (Cell surface smooth; apical area without spiny projections)
Species: Cell body 115-150 μm long, 53-70 μm wide, L/W=2.0,
isthmus 18-26 μm wide;
(Illustrations of The Japanese Fresh-water Algae, 1977).
|
Euastrum didelta Ralfs var. didelta (or E. affine ?),
semicell 69 μm long (cell body 138 μm), 70 μm wide, L/W=2.0, isthmus 20 μm wide,
x 640, No.2, Hachiman-numa marsh, Hachimantai, Hachimantai city (formerly Ashiro town & Matsuo village), Iwate Pref., Japan, September 12, 2006 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Cell body 127 μm long, 70 μm wide, L/W=, isthmus 23 μm wide, x 640
Cell body 133 μm long, 70 μm wide, L/W=, isthmus 23 μm wide, x 640
Images of collecting locality:
No.2, Hachiman-numa marsh, Hachimantai, Hachimantai city (formerly Ashiro town & Matsuo village), Iwate Pref., Japan, September 12, 2006 by Y. Tsukii
Please click on images for viewing enlarged.
Copyright
Protist Information Server