Order Cymbellales

Family Anomoeneidaceae D.G. Mann

Genus Anomoeoneis Pfitzer

• Anomoeoneis brachysira (Brébisson) Cleve var. brachysira — periphyton, bogs, lakes (Dressler, Hübener, 2002).
• Anomoeoneis serians (Brébisson) Cleve — planktonic, common in summer, Velikaya Salma; dominant, mouth of the Chernaya River (Бондпарчук, 1963); periphyton, bogs, lakes (Dressler, Hübener, 2002).
• Anomoeoneis sphaerophora E. Pfitzer – marine, littoral; benthic, periphyton, sporadic (Бондарчук, 1970).

Genus Staurophora Mereschkowsky

• Staurophora amphioxys (Gregory) D.G. Mann – marine, littoral, Rugozerskaya Bay; single finding (Бондарчук, 1970: Stauroneis gregorii Ralfs ex Pritchard).
• Staurophora wislouchii (Poretzky & Anisimova) Mereschkowsky — marine, common, littoral (Сапожников, 1998: as Stauroneis wislouchii f. parva Poretzky & Anisimova).

Family Cymbellaceae Greville

Genus Brebissonia A. Grunow

• Brebissonia boeckii (Ehrenberg) E. O’Meara – marine, littoral; benthic, periphyton; sporadic (Бондарчук, 1970; Сапожников, 1998).

Genus Cymbella C. Agardh

• Cymbella affinis Kützing – marine, littoral; everywhere, in some areas abundant, in diluted areas (Бондарчук, 1970). Freshwater; periphyton (Dressler, 2003: C. affinis and C. cymbiformis var. cymbiformis Agardh and C. cymbiformis var. nonpunctata Fontell).
• Cymbella amphicephala Näegeli var. hercynica (A. Schmidt) Cleve – freshwater; periphyton (Dressler, 2003).
• Cymbella aspera (Ehrenberg) Cleve – freshwater; periphyton (Dressler, 2003).
• Cymbella caespitosa (Kützing) Brun — periphyton, bogs, lakes (Dressler, Hübener, 2002).
• Cymbella cistula (Hemprich & Ehrenberg) O. Kirchner – marine, littoral; often in diluted areas (Бондарчук, 1970: C. cistula (Hemp.) Grun.). Freshwater; periphyton (Dressler, 2003).
• Cymbella cuspidata Kützing — planktonic, benthic, rare, freshwater
• Cymbella cymbiformis C. A. Agardh – Kindo peninsula; bogs, lakes; Chernaya River, Nilma; periphyton; VIII 2000 (Dressler, 2003: as C. cymbiformis var. cymbiformis Agardh and C. cymbiformis var. nonpunctata Fontell).
  • Cymbella cymbiformis var. nonpunctata Fontell — periphyton, bogs, lakes (Dressler, Hübener, 2002).
• Cymbella ehrenbergii Kützing — planktonic, benthic, common, freshwater
• Cymbella gracilis (Ehrenberg) Kützing — periphyton, bogs, lakes (Dressler, Hübener, 2002); planktonic, common, Vodoprovodnoye (Potable water) Lake.
• Cymbella helvetica Kützing – freshwater; periphyton (Dressler, 2003).
• Cymbella lanceolata (Ehrenberg) Kirchner – freshwater; periphyton (Dressler, 2003).
• Cymbella leptoceros (Ehrenberg) Kützing – freshwater; periphyton (Dressler, 2003).
• Cymbella naviculiformis (Auerswald) Cleve – freshwater; periphyton (Dressler, 2003).
• Cymbella proxima R.M. Patrick & Reimer – freshwater; periphyton (Dressler, 2003); in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
• Cymbella subaequalis Grunow – freshwater; periphyton (Dressler, 2003).
• Cymbella tumida (Brébisson) van Heurck — planktonic, benthic, rare, freshwater
• Cymbella turgidaW. Gregory – marine, littoral; sporadic, преимущественно in diluted areas (Бондарчук, 1970: C. turgida (Greg.) Cl.).
• Cymbella ventricosa C. Agardh – marine, littoral; sporadic, everywhere (Бондарчук, 1970: as C. ventricosa Ktz.).

Genus Encyonema Kützing

• Encyonema caespitosum Kützing – freshwater; periphyton (Dressler, 2003).
• Encyonema mesianum (Cholnoky) D. G. Mann — periphyton, bogs, lakes (Dressler, Hübener, 2002: as Cymbella mesiana Cholnoky).
• Encyonema minutum (Hilse) D. G. Mann – freshwater; periphyton (Dressler, 2003).
• Encyonema neogracile Krammer – freshwater; periphyton (Dressler, 2003).
• Encyonema neomesianum Krammer – freshwater; periphyton (Dressler, 2003).
• Encyonema silesiacum (Bleisch) D. G. Mann – freshwater; periphyton (Dressler, 2003); in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).

Genus Encyonopsis K. Krammer

• Encyonopsis cesatii (Rabenhorst) Krammer var. cesatii – freshwater; periphyton (Dressler, 2003).
• Encyonopsis descripta (Hustedt) Krammer – freshwater; periphyton (Dressler, 2003).
• Encyonopsis krammeri Reichardt – freshwater; periphyton (Dressler, 2003).
• Encyonopsis microcephala (Grunow) Krammer – freshwater; periphyton (Dressler, 2003).
• Encyonopsis minuta Krammer & E. Reichardt – freshwater; periphyton (Dressler, 2003).
• Encyonopsis subminuta Krammer & E. Reichardt – freshwater; periphyton (Dressler, 2003).

Family Gomphonemataceae Kützing

Genus Didymosphenia M. Schmidt in A. Schmidt

• Didymosphenia geminata (Lyngbye) M.Schmidt in A. Schmidt – freshwater; periphyton (Dressler, 2003).

Genus Gomphonema Ehrenberg

• Gomphonema acuminatum Ehrenberg – marine, littoral; often in diluted areas (Бондарчук, 1970). Freshwater; periphyton (Dressler, 2003).
• Gomphonema angustum (Kützing) Rabenhorst – freshwater; periphyton (Dressler, 2003).
• Gomphonema augur Ehrenberg var. augur – freshwater; periphyton (Dressler, 2003).
• Gomphonema clavatum Ehrenberg – freshwater; periphyton (Dressler, 2003).
• Gomphonema constrictum Ehrenberg — epiphyte on algae, common, marine, brackish-water, freshwater
• Gomphonema gracile Ehrenberg – freshwater; periphyton (Dressler, 2003).
• Gomphonema hebridense W. Gregory – freshwater; periphyton (Dressler, 2003).
• Gomphonema olivaceum (Hornemann) Kützing – marine, littoral; sporadic, everywhere (Бондарчук, 1970: G. olivaceum (Lyngb.) Ktz.).
• Gomphonema parvulum (Kützing) F.H. van Heurck – freshwater; periphyton (Dressler, 2003). Also in in the superficial brackish layer of wind mixing 0–0.5 m in semi-isolated coastal stratified lake Kislo-Sladkoe (Mindolina et al., 2023).
• Gomphonema subtile Ehrenberg – freshwater; periphyton (Dressler, 2003).
• Gomphonema truncatum Ehrenberg – freshwater; periphyton (Dressler, 2003).

Family Rhoicospheniaceae Topachevs'kyi & Oksiyuk

Genus Gomphonemopsis L.K. Medlin in L.K. Medlin & F.E. Round

• Gomphonemopsis exigua (Kützing) Medlin – marine, littoral; everywhere; in some areas abundant (Бондарчук, 1970: Gomphonema exiguum Kützing).

Genus Rhoicosphenia Grunow

• Rhoicosphenia abbreviata (C. Agardh) Lange-Bertalot var. abbreviata – marine, littoral; periphyton; everywhere, in some areas масс. (Бондарчук, 1970: as Rh. curvata (Kützing) Grunow ex Rabenhorst; Rh. curvata var. marina (Kützing) Grunow – together with type variation; often). Marine, littoral; benthic (Сабурова, 1995: as Rh. curvata).
• Rhoicosphenia marina (W. Smith) A. Schmidt — planktonic, common, Velikaya Salma (Бондарчук, 1963); epiphyte on marine macrophytes, common, littoral, sublittoral, everywhere
• Rhoicosphenia pullus M.Schmidt – marine, sublittoral; among fouling; rare (Бондарчук, 1970).

rus: Порядок Cymbellales