Selected synonymic references
Cyttarocylis acuminata: Daday, 1887b
Ptychocylis acuminata: Brandt, 1906-1907
Ptychocylis acuminata var. semireticulata: Brandt, 1906-1907
Ptychocylis acuminata var. b: Brandt, 1906-1907
Ptychocylis acuminata var. c: Brandt, 1906-1907
Epiplocylis acuminata: Jörgensen, 1924; Kofoid and Campbell, 1929; Balech, 1959; 1962b; Souto, 1970a, 1979
Epiplocylis inconspicuata: Kofoid and Campbell, 1929
Epiplocylis inflata: Kofoid and Campbell, 1929