Order Surirellales

Family Entomoneidaceae Reimer in Patrick & Reimer

Genus Entomoneis C.G. Ehrenberg

• Entomoneis alata (Ehrenberg) Ehrenberg — marine, littoral (Сапожников, 1998); marine, planktonic (Rat'rjva, 2000).
• Entomoneis kjelmanii (Cleve) Poulin & Cardinal — marine, littoral (Сапожников, 1998).
• Entomoneis paludosa (W. Smith) Reimer var. paludosa – marine, littoral; diluted areas; benthic, periphyton; rare (Бондарчук, 1970: Amphiprora paludosa W. Smith; A. paludosa var. borealis Grunow – rare, everywhere). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995: A. paludosa). E. paludosa (W. Smith) Reimer var. hyperborea (Grunow) Poulin & Cardinal – marine; planktonic; dominant in spring (Конопля, 1974: as Amphiprora hyperborea Grunow). Marine; planktonic (Сёмина, Сергеева, 1983: as A. hyperborea). Entomoneis paludosa var. subsalina (Cleve) Krammer, 1987 - brackish. Found in semi-isolated coastal stratified lake Kislo-Sladkoe (Mindolina et al., 2023).

Family Surirellaceae Kützing

Genus Campylodiscus Ehrenberg

• Campylodiscus angularis Gregory — planktonic, sporadic, Babje More (Бондарчук, 1963); epiphyte among fibres of brown algae Chorda filum, rare, Eremeevsky porog rapids
• Campylodiscus fastuosus Ehrenberg – marine, littoral, sublittoral; benthic, periphyton; rare (Бондарчук, 1970: C. thuretii Brébisson).

Genus Cymatopleura W. Smith

• Cymatopleura solea (Brébisson) W. Smith – freshwater; periphyton (Dressler, 2003).

Genus Petrodictyon D. G. Mann in R. E. Round, R. M. Crawford & D. G. Mann

• Petrodictyon gemma (Ehrenberg) D. G. Mann – marine, littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970: as Surirella gemma Ehrenberg).

Genus Stenopterobia Brébisson

• Stenopterobia intermedia F. W. Lewis – marine, littoral, mouth of a brook in the Rugozerskaya Bay; sporadic findings (Бондарчук, 1970).

Genus Surirella Turpin

• Surirella baltica J. Schumann — marine, littoral (Сапожников, 1998).
• Surirella brebissonii Krammer & Lange-Bertalot – freshwater; periphyton (Dressler, 2003).
• Surirella capronii J. Brébisson — benthic, common, freshwater supralittoral basins, pools, lakes
• Surirella comis A. Schmidt – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970).
• Surirella fastuosa Ehrenberg – marine, littoral, sublittoral; benthic; rare (Бондарчук, 1970).
• Surirella ovalis Brébisson – marine, littoral, diluted areas; benthic; in some areas dominant (Бондарчук, 1970; S. ovalis var. brightwellii (W. Sm.) A. Cl. – sporadic, together with type variation; S. ovalis var. salina (W. Sm.) V. H. – rare, together with type variation).
• Surirella ovata Kützing – marine, littoral, diluted areas; benthic; in some areas dominant (Бондарчук, 1970).

rus: Порядок Surirellales