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Chlorophyceae: Chlorococcales: Hydrodictyaceae

Pediastrum
Meyen

Family: Colonies of a fixed number of cells or reticulated bag in shape; chloroplasts plate-like or reticulated, with one or many pyrenoids; asexual reproduction by zoospores, sexual reproduction by fertilization (Illustrations of The Japanese Fresh-water Algae, 1977).
Genus: Colonies of a fixed number of cells, flat, circular in shape; cell body polygonal in shape, with horn-like projections; cell wall garanulated, wrinkled or notched; chloroplasts plate-like or reticular; asexual reproduction by zoospore; sexual reproduction by isogametes (Illustrations of The Japanese Fresh-water Algae, 1977).
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Two or more horn-like processes; Intercelluar space absent
Pediastrum
P. boryanum
37 samples
199?-2006
Pediastrum
P. boryanum ?
similar to biradiatum
6 samples
Uruguay, 1999
Pediastrum
P. muticum
or P. boryanum
v. longicorne
17 samples
128, 64, 16 cells
Japan, 1998-2008
Pediastrum
P. tetras
44 samples
16, 8, 4 cells
1998-2007
Pediastrum
Pediastrum sp.
colonies 25 μm φ
N/L=
megamiyama
Nishi-no-miya
Hyogo, 2004
Pediastrum angulosum
P. angulosum
6 samples
surface ridged
col. μm φ
2001-2006
Pediastrum integrum
P. integrum
9 samples
col. μm φ
Japan, 2002-2007
Two or more horn-like processes; Intercelluar space present
Pediastrum
P. duplex
var. duplex
21 samples
1997-2006
Pediastrum
P. duplex
var. reticulatum
8 samples
1997-2005
Pediastrum
P. duplex
var. gracilimum
19 samples
1997-2004
Pediastrum duplex
P. duplex
v. rugulosum
9 samples
1997-2005
Pediastrum
P. duplex
v. rotundatum
5 samples
1997-2001
Pediastrum
P. duplex
var. reticulatum ?
col. μm φ
Pediastrum
P. duplex
var. reticulatum ?
col. μm φ
Pediastrum
P. angertiniense
1 sample
Uruguay, 1999
Pediastrum
P. biradiatum ?
2 samples
col. μm φ
1999-2003
Pediastrum
Pediastrum sp.
11 samples
col. μm φ
1999-2006
Pediastrum
Pediastrum sp.
col. 35 μm φ
Iruma river
Kawagoe
Saitama, 2004
One horn-like process on each outer cell
Pediastrum
P. simplex
v. simplex
4 samples
1997-2006
Pediastrum simplex
P. simplex
v. duodenarium
23 samples
1997-2008
Pediastrum
P. simplex
v. echinulatum
19 samples
1997-2006
Pediastrum
P. asymmetricum
col. μm φ
2 samples
2001-2007

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Pediastrum
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