Children (53 direct children, 86 direct and indirect children):
Oocystis apiculata
(tree size 5)
Oocystis apicurvata
Oocystis arctica
Oocystis austriaca
Oocystis biplacata
Oocystis bispora
Oocystis borgei
(tree size 2)
Oocystis brevispina
Oocystis chodati
Oocystis cingulatus
Oocystis compacta
Oocystis composita
Oocystis elegans
Oocystis elliptica
Oocystis geminata
Oocystis hunanensis
Oocystis irregularis
Oocystis kolhapurensis
Oocystis kumaoensis
Oocystis lacustris
(tree size 2)
Oocystis macrospora
Oocystis maharastrensis
Oocystis mammillata
Oocystis marina
Oocystis marssonii
Oocystis minuta
(tree size 2)
Oocystis naegelii
(tree size 6)
Oocystis nodulosa
(tree size 2)
Oocystis novae-semliae
(tree size 2)
Oocystis obtusa
Oocystis panduriformis
(tree size 1)
Oocystis parva
Oocystis pelagica
(tree size 1)
Oocystis polymorpha
Oocystis pusilla
(tree size 1)
Oocystis pyriformis
Oocystis rhomboidea
Oocystis rifeum
Oocystis rupestris
Oocystis socialis
Oocystis striata
Oocystis subhexagona
Oocystis submarina
(tree size 2)
Oocystis tainoensis
Oocystis granulata
Oocystis mamillata
Oocystis nordstedtiana
(tree size 1)
Oocystis ovalis
(tree size 2)
Oocystis pandoriformis
Oocystis planctonica
Oocystis polychaeta
Oocystis rotula
Oocystis solitaria
(tree size 4)