Genus: Colonial, without lorica; cell body 5-10 micron long, indivuduals clusterd at the end of a stalk; fresh water (Kudo, 1966). Colonies of 30 or more flagelaltes attached by their posterior ends to a secreted stalk (Illustrated Guide, 1985).
->> Description at WPRNO Google Image Search
C. cyclopum ?
cell 8 x 4 μm
Japan, 1999
C. cyclopum ?
cell μm
Kannon-numa
Shimogo
Fukushima, 2008
Cephalothamnium ?
cell μm
Omine-numa
Tsukiyono
Gunma, 2003
