Fragilariforma acidobiontica (Charles) Williams & Round 1958 [Link to DiatomBase]
Fragilariforma bastowiana G. Reid & D.M. Williams 2008 [Link to DiatomBase]
Fragilariforma bastowiana G. Reid & D.M. Williams 2008 [Link to DiatomBase]
Fragilariforma bicapitata (A. Mayer) Williams & Round 1988 [Link to DiatomBase]
Fragilariforma constricta (Ehrenberg) Williams & Round 1988 [Link to DiatomBase]
Fragilariforma constricta f. stricta (A. Cleve) Hartley 1996 [Link to DiatomBase]
Fragilariforma constricta f. stricta (A. Cleve) Poulin in Hamilton, Poulin, Charles & Anagell 1992 [Link to DiatomBase]
Fragilariforma constricta f. tetranodis (A. Cleve) Poulin in Hamilton, Poulin, Charles & Angell 1992 [Link to DiatomBase]
Fragilariforma constricta var. trinodis (Hustedt) Hamilton in Hamilton, Poulin, Charles & Angell 1992 [Link to DiatomBase]
Fragilariforma costatum (Rehakova) Williams 1996 [Link to DiatomBase]
Fragilariforma floridana (Hanna) Williams 1990 [Link to DiatomBase]
Fragilariforma hamiltonii D. Metzeltin & Lange-Bertalot 2007 [Link to DiatomBase]
Fragilariforma hungarica (Pantocsek) Hamilton in Hamilton, Poulin, Charles & Angell 1992 [Link to DiatomBase]
Fragilariforma hungarica var. tumida (Cleve-Euler) Hamilton in Hamilton, Poulin, Charles & Angell 1992 [Link to DiatomBase]
Fragilariforma javanica Wetzel, Morale s & Ector 2013
Fragilariforma lata (A. Cleve-Euler) Williams & Round 1988 [Link to DiatomBase]
Fragilariforma lata var. acuta R. Flower 2005 [Link to DiatomBase]
Fragilariforma marylandica Edlund, Laub, Siver, Hamilton et Morales 2011 [Link to DiatomBase]
Fragilariforma platensis Williams 1996 [Link to DiatomBase]
Fragilariforma spinulosa (Patrick) D. Metzeltin & Lange-Bertalot 2007 [Link to DiatomBase]
Fragilariforma stevensonii D. Metzeltin & Lange-Bertalot 2007 [Link to DiatomBase]
Fragilariforma strangulata (Zanon) Williams & Round 1988 [Link to DiatomBase]
Fragilariforma virescens (Ralfs) Williams & Round 1988 [Link to DiatomBase]
Fragilariforma virescens var. capitata (Østrup) Czarnecki 1994 [Link to DiatomBase]
Fragilariforma virescens var. capitata (Østrup) Hartley 1996 [Link to DiatomBase]
Fragilariforma virescens var. exigua (Grunow in Van Heurck) Poulin in Hamilton, Poulin, Charles & Angell 1992 [Link to DiatomBase]
Fragilariforma virescens var. mesolepta (Rabenhorst) N.A. Andresen, E.F. Stoermer, & R.G. Kreis, Jr 2000 [Link to DiatomBase]
Fragilariforma virescens var. oblongella (Grunow) N.A. Andresen, E.F. Stoermer, & R.G. Kreis, Jr. 2000 [Link to DiatomBase]
Fragilariforma virescens var. subsalina (Grunow in Van Heurck) Bukhtiyarova 1995 [Link to DiatomBase]
Fragilariforma williamsii D. Metzeltin & Lange-Bertalot 2007 [Link to DiatomBase]