Species: Cell body small in size, 21-25 μm long (excluding spines), 18.3-24 μm wide
(excluding spines), L/W=1.25-1.3, isthmus 6-9 μm wide; semicells elongate elliptical in
lateral view, apex flat, each corner rounded, with 2-3 spiny projections, additionally 6-8 spiny projections
surrounding around the corners; spines present at the base of the semicells;
apical view triangle- or rectangle-shaped
(Illustrations of The Japanese Fresh-water Algae, 1977)
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31 μm
63 μm
94 μm; x 640
Staurastrum hystrix Ralfs,
cell body 26 μm long, 23 μm wide (excluding spines, 5 μm), L/W=1.1, isthmus 10 μm wide,
x 640, No. 5-2, Mida-ga-hara (bog/marsh), Gassan (mountain), Tsuruoka city (formerly Haguro town) & Shonai town (formerly Tachikawa town), Yamagata Pref., Japan, August 3, 2006 by Y. Tsukii
31 μm
63 μm
94 μm; x 640
Cell body μm long, μm wide, L/W=, isthmus μm wide, x 640
Images of collecting locality:
No. 5, Mida-ga-hara (bog/marsh), Gassan (mountain), Tsuruoka city (formerly Haguro town) & Shonai town (formerly Tachikawa town), Yamagata Pref., Japan, August 3, 2006 by Y. Tsukii
