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Gamophyceae: Zygnematales: Desmidiaceae

Staurastrum hystrix
Ralfs

Staurastrum 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)
Similar species -->> S. subteliferum;


Staurastrum hystrix Ralfs, cell body 24 μm long, 23 μm wide (excluding spines, 5 μm), L/W=1.0, isthmus 10 μm wide, x 640, No. 5-1, 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
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum Staurastrum Staurastrum

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
scale 31 μm scale 63 μm scale 94 μm; x 640
Staurastrum Staurastrum Staurastrum
Cell body μm long, μm wide, L/W=, isthmus μm wide, x 640
Staurastrum Staurastrum Staurastrum

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


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