Protist Images: Haematococcus

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

Haematococcus lacustris
(Girod) Rostafiniski, 1871 (Syn.: H. pluvialis Flotow, 1844) (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000)
Haematococcus pluvialis Flotow 1844 em. Wille 1903 (Syn.: H. lacustris (Girod) Rostafinski 1871) (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).

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: Cell body ovoid or spherical, 40-50 μm in diam.; with many pyrenoids (Illustrations of The Japanese Fresh-water Algae, 1977).

Haematococcus, axenic culture with Hyponex and KCM, cell body 22-39 μm long, 14-35 μm wide, test 31-55 μm long, 25-50 μm wide, flagellum 26 μm long, 2 equal-length flagella, a large chlroplast, anterior papilla, x 400, x 640, Nasu-shiobara city (formerly Kuroiso city), Tochigi Pref., Japan, March 2001 by Y. Tsukii