''Radaisia'' is a genus of
coccoid
Coccoid means shaped like or resembling a coccus, that is, spherical.The noun coccoid or coccoids may refer to:
* a level of organization, characterized by unicellular, non-flagellated, non-amoeboid organisms, with a definite shape, in general b ...
cyanobacterium comprising about 10 identified species.
It is a colonial cyanobacterium, the bacteria initially forming a round to irregularly shaped flat group of gelatinous or crustose cells attached to the substrate from which arise rows of pseudofilamentous cells in mucilaginous sheaths perpendicular to the initial colony.
Apical cells of the pseodofilamentous sheaths are elongate compared to proximal cells in the sheath.
Cell division in the genus is notably irregular, although usually perpendicular to the axis in the pseudofilament.
The cells are light blue-green to reddish purple in color.
Species
Some species currently in this genus include:
*''
R. clavata''
*''
R. confluens''
*''
R. epiphytica''
*''
R. gardneri''
*''
R. gomontiana''
*''
R. pusilla''
*''
R. violacea''
*''
R. willei''
References
*
Pleurocapsales
Cyanobacteria genera
{{cyanobacteria-stub