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Gamophyceae: Zygnematales: Desmidiaceae

 Staurastrum aciculiferum
(West) Anderson (Illustrations of The Japanese Fresh-water Algae)
(West) Anderrson (algaeBASE)

Staurastrum aciculiferum Genus: Cell body short, radiate in shape; apical view of the cell, triangular, polygonal, ellipsoidal or spindle-shaped; zygospores formed outside of mother cells (Illustrations of The Japanese Fresh-water Algae, 1977)
Subgenus: lacks arm-like projections (Illustrations of The Japanese Fresh-water Algae, 1977)
Species: Cell body small, (22.4-25)-30 μm long, (28)-34 μm wide, L/W=1, isthmus 5-(7.8-9) μm wide; semicells elliptical or triangular in side view, apex slightly convex, laterally strongly convex; dichotomous projections at each corner; apical view triangular (Illustrations of The Japanese Fresh-water Algae, 1977)

Staurastrum aciculiferum (West) Anderson, cell body 22 μm long, 20 μm wide, L/W=1.1 (excluding spiny projections, 7 μm), 26 μm long, 32 μm wide (including spiny projections), L/W=0.8, isthmus 7 μm wide, x 640, No. 6-1, 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
Cell body ?? μm long, 21 μm wide, L/W= (excluding spiny projections, 6 μm), cell body ?? μm long, 33 μm wide, L/W= (including spiny projections), isthmus 7 μm wide, x 640
Staurastrum Staurastrum Staurastrum

Images of collecting locality: No. 6, 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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