image_list image_listE

Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum senarium
(Ehrenberg) Ralfs
Identified by Rupert Lenzenweger ( Zieralgen Desmidiaceen verborgene Schönheiten im Wasser, Austria)

Staurastrum senarium Species [var. senarium ]: Cell body 21-31 μm long (excluding spiny projections), 29-36 μm long (including spiny projections), 27-34 μm wide (including spiny projections), isthmus 8.4-12 μm wide.
[ var. simplex Hirano ]: Smaller than var. senarium, 23 μm (excluding spiny projections), 44 μm (including spiny projections), 43 μm wide (including spiny projections), isthmus 7 μm wide; projections at posterior side margins of semicells are simple spines (not dichotomous).
[ var. nigrae-silvae Schmidle ]: 2 ring of dented structures surrounding each corner, 29 μm (including spiny projections), 36.4 μm wide, isthmus 12.5 μm wide (Illustrations of The Japanese Fresh-water Algae, 1977)

QuickTime
Movies

http://protist.i.hosei.ac.jp/


Staurastrum senarium (Ehrenberg) Ralfs (identified by Rupert Lenzenweger), cell body 28 μm long, 23 μm wide (excluding spines), L/W = 1.2, isthmus μm wide, x 640, x 200, x 400, Hiroshima October 1998, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum senarium Staurastrum senarium


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