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Chlorophyta: Prasinophyceae: Chlorodendrales (Tetraselmidales)
Mastigophora: Phytomastigophorea: Prasinomonadida

 Tetraselmis cordiformis
(Carter) Stein, 1878
Syn: Carteria cordiformis (Carter) Dill, 1895

Tetraselmis cordiformis Genus: Cell body ellipsoidal-ovoidal with cell wall; Four euqal-length flagella arising from an anterior depression of the cell body; chloroplast cup-shaped with a pyrenoid at the bottom; a single stigma large; two contractile vacuoles at the base of flagella (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).
Species: Cell body ovoidal, 16-23 μm in diam.; anterior depression 1/5-1/6 of the body length; a single circular stigma located at the equatorial line (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).

Tetraselmis cordiformis, cell body μm long, μm wide, L/W=, x 640, Japanese garden, Akebono-yama (mountain) Park, Kashiwa city, Chiba Pref., Japan, May 18, 2008 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Tetraselmis cordiformis Tetraselmis cordiformis Tetraselmis cordiformis Tetraselmis cordiformis Tetraselmis cordiformis

Images of collecting locality: Japanese garden, Akebono-yama (mountain) Park, Kashiwa city, Chiba Pref., Japan, May 18, 2008 by Y. Tsukii

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