(Oocystis) (Oocystis) is a biological genus in the family Oocystaceae and order Chlorellales.
Oocystis borgei
Oocystis citriformis
Oocystis crassa
Oocystis elliptica
Oocystis eremosphaeria
Oocystis gloeocystiformis
Oocystis lacustris
Oocystis marssonii
Oocystis naegelii
Oocystis natans
Oocystis nodulosa
Oocystis novaesemilae
Oocystis panduriformis
Oocystis parva
Oocystis pelagica
Oocystis pusilla
Oocystis pyriformis
Oocystis socialis
Oocystis solitaria
Oocystis submarina
Ceraterias
Chlorella
Chodatella
Closteriopsis
Cryocystis
Dactylococcus
Desmatractum
Eremosphaera
Franceia
Gloeotaenium
Lagerheimiella
Nannochloris
Nephrochlamys
Nephrocytium
Oocystis
Oonephris
Pachycladon
Palmellococcus
Planktosphaeria
Polyedriopsis
Pseudoraciborskia
Rochiscia
Scotiella
Treubaria
Trochiscia
Westella
Zoochlorella