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Chlorophyceae: Chlamydomonadales (Volvocales): Phacotaceae
Volvocida: Chlamydomonadina: Phacotidae

Pteromonas
Seligo 1887

Family: Unicells; cell wall separating into two parts (Illustrations of The Japanese Fresh-water Algae, 1977).
Genus: Unicellular; two equal-length flagella emerging from anterior end; cell body flat, broad ovoidal, lateral view spindle-shaped, within a gelatinous sheath quadrangular in shape; a single chloroplast plate-like, with 4-6 pyrenoids (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
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Pteromonas aculeata
P. aculeata
cell 21 x 12 μm
sheath 30 x 18 μm
S-M general park
Showa
Saitama, 2003
Lobomonas
P. aculeata
cell μm
sheath μm
Shimo-muneoka
Shiki
Saitama, 2004
Pteromonas
P. angulosa ?
12 x 8 μm
Watarase river
Ashikaga
Tochigi, 2004
Pteromonas
Pteromonas sp. ?
or Vitreochlamys ?
test 19 x 15 μm
cell 14 x 9 μm
Saitama, 1999
Pteromonas
P. cordiformis
test 13 x 11 μm
cell 11 x 7 μm
Sayama
Saitama, 2001
Pteromonas cordiformis
P. cordiformis
test μm
cell μm
Naruto
Chiba, 2003
Pteromonas
P. cordiformis ?
test μm
cell 9-11 x 6.5-9 μm
Shiken-zaike
Kamikawa
Saitama, 2004
Pteromonas
P. multipyrenoidea
or P. cordiformis ?
test μm
cell μm
Naruto
Chiba, 2003
Pteromonas
P. multipyrenoidea
or P. cordiformis ?
test μm
cell 15 x 8 μm
Shimo-muneoka
Shiki
Saitama, 2004
Pteromonas cordiformis
P. multipyrenoidea
test 16 x 11 μm
cell 13 x 9 μm
Akigase park
Saitama, 2005
Pteromonas multipyrenoidea
P. multipyrenoidea
test 23 x 17 μm
cell 17 x 13 μm
Toyonodai park
Otone
Saitama, 2006
Pteromonas
P. multipyrenoidea
test 22 x 17 μm
cell 20 x 10 μm
Sakitama-kofun p.
Gyoda
Saitama, 2006
Similar genus -->> Coccomonas;

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Pteromonas
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