• Cysta Cleve, 1900 accepted as Pterosperma Pouchet, 1893
• Cystacanthus T. Anderson, 1867
• Cystactinia Brooks, 1964 † (uncertain > nomen dubium)
• Cystactinia ocalana Brooks, 1964 †
• Cystactis Vosmaer, 1885 (unaccepted)
• Cystacythereis accepted as Cistacythereis Uliczny, 1969 †
• Cystagora Stafford, 1905 (uncertain)
• Cystalia Haeckel, 1888 (uncertain)
• Cystammina Neumayr, 1889
• Cystammina aguayoi Bermudez & Acosta, 1940
• Cystammina galeata (Brady, 1881)
• Cystammina pauciloculata (Brady, 1879)
• Cystammina spiculifera Zheng, 1988
• Cystamminella Lukina, 1980 † accepted as Buzasina Loeblich & Tappan, 1985 † [Family: Haplophragmoididae]
• Cystamminella Myatlyuk, 1966 † (uncertain) [Family: Sarcomastigota (awaiting allocation)]
• Cystamminella galeata (Brady, 1881) † accepted as Buzasina galeata (Brady, 1881) †
• Cystamminoides Zheng in Zheng & Fu, 2001
• Cystamminoides quadriloculus Zheng & Fu, 2001
• Cystamminoides triloculus Zheng & Fu, 2001
• Cystangium R. Singer & A.H. Smith, 1960 accepted as Russula Persoon, 1796
• Cystangium balpineum Grgur., 1997
• Cystangium crichtonii G.W. Beaton, Pegler & T.W.K. Young, 1986
• Cystangium depauperatum Singer & A.H. Sm., 1960
• Cystangium phymatodisporum G.W. Beaton, Pegler & T.W.K. Young, 1984
• Cystangium pineti Singer, 1985
• Cystangium rodwayi (Massee) A.H. Sm., 1963
• Cystangium sessile (Massee & Rodway ex Rodway) Singer & A.H. Sm., 1960
• Cystanthe R. Brown, 1810 accepted as Richea R. Brown, 1810
• Cystaster Hall, 1871 †
• Cystauletes King, 1943 †