image_list image_listE

Chlorophyceae: Chlorococcales: Oocystaceae

Oocystis marssonii
Lemmermann

Genus: Planktonic; colony of 2-8 cells surrounded by cell wall of their mother cell, but sometimes unicellular; cell body broad ellipsoidal, both ends slightly pointed and with a thick cell wall; 1-3 chloroplasts parietal plate-like, with a single pyrenoid (Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species: Cell body ellipsoid to broad-ellipsoid, with a slightly projected, thickened cell wall at both ends, 12-18 μm long, 8-16 μm wide; 2, 4, or 8 autospores enclosed within a enlarged mother cellwall; chloroplasts 1-4, parietal laminate, each with a pyrenoid (Photomicrographs of the Freshwater Algae, vol. 18, 1997).
Oocystis marssonii
O. marssonii
16 x 11 μm
Matto
Ishikawa, 2002
Oocystis marssonii
O. marssonii
or O. borgei ?
16 x 11.5 μm
Ho-daisan-koen
Yoshikawa
Saitama, 2006
Oocystis marssonii
O. marssonii
16 x 9 μm
Koga museum
Koga
Ibaraki, 2003
xxxx
O. marssonii ?
μm
Fujimitashiro
Katashina
Gunma, 2007
Oocystis marssonii
O. marssonii
16 x 10 μm
Ishinazaka
Furukawa
Miyagi, 2003
Oocystis
O. marssonii ?
15 x 13 μm
Higusa-numa
Hikari
Chiba, 2003
Oocystis
O. marssonii
15 x 13 μm
Kawashima
or Kawajima
Saitama, 2002
Oocystis
O. marssonii
14 x 10 μm
Kasuga
Fukuoka, 2001
Oocystis
O. marssonii
12 x 8 μm
L/W=1.5
Tatebayashi
Gunma, 2001
Oocystis
O. marssonii
12.5 x 8 μm
L/W=1.6
Koshigaya
Saitama, 2001
Oocystis marssonii
O. marssonii
12 x 7.5 μm
Kejo-numa
Furukawa
Miyagi, 2003
Oocystis marssonii
O. marssonii
11 x 8 μm
Showa-machi G.P.
Showa
Saitama, 2003
Oocystis marssonii
O. marssonii
13 x 7 μm
L/W=1.9
Kamonoyachi numa
Zao onsen
Yamagata, 2005
Oocystis
O. marssonii
μm
Tatsumi-ike
Nagano
Nagano, 2008
Similar genus -->> Nephrocytium;

Please click on species name for more images.
Oocystis
Copyright Protist Information Server