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Chlorophyceae: Chlamydomonadales (Volvocales): Chlamydomonadaceae
Volvocida: Chlamydomonadina: Carteriidae

Vitreochlamys velata
(Formerly Sphaerellopsis Korschikoff 1925)
(Korschikoff) Gerloff 1940

Pteromonas Species: Cell body (cellwall) cylindrical, both ends rounded, anterior end slightly domed, 15-38 μm long, 8-20 μm wide; cellwall thin; papilla absent; protoplast ovoid or ellipsoidal or spindle-shaped; length of flagella the same as that of cell body; chloroplast cup-shaped; a single pyrenoid spherical, at posterior half of the cell; stigma elliptical, anterior; nucleus anterior; two contractile vacuoles apical (Süßwasserflora von Mitteleuropa 9, Chlorophyta I, 1983).

Vitreochlamys velata (Korschikoff) Gerloff 1940 (or Sphaerellopsis cylindrica Skuja 1948, or Sphaerellopsis vestita (Pascher) Gerloff 1940 ?) , cell body μm long, μm wide, x 640, Flower park, Tomita, Ashikaga city, Tochigi Pref., Japan, October 2003 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
Pteromonas Pteromonas

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