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Chlorophyceae: Chlamydomonadales (Volvocales): Chlamydomonadaceae
Chlamydophyceae: Chlamydomonadales: Haematococcaceae
Volvocida: Chlamydomonadina: Chlamydomonadidae

Haematococcus lacustris
(Girod) Rostafiniski, 1871
Syn: H. pluvialis Flotow, 1844

Haematococcus Genus: Unicellular, within a large spherical sheath; two equal-length flagella emerging from anterior end; cell body spherical or ellipsoidal, connected with gelatinous sheath by fine filaments; a single chloroplast cup-shaped, with several pyrenoids (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species:


Haematococcus sp. ?, cell body nearly spherical, 19 μm long, 20 μm wide, two flagella about 25 μm long, x 640, Sansui-tei (Japanese Restaurant), Tsukuba city, Ibaraki Pref., Japan, July 2002 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400 : scale 31 μm scale 63 μm scale 94 μm; x 640
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