Difference between revisions of "Order Naviculales"

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===Family Amphipleuraceae Grunow===
 
===Family Amphipleuraceae Grunow===
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Genus Amphipleura Kützing
+
Genus ''Amphipleura'' Kützing
−
*Amphipleura micans (Lyngbye) Cleve – marine, littoral; benthic, periphyton; rare (Бондарчук, 1970).
+
*''Amphipleura micans ''(Lyngbye) Cleve – marine, littoral; benthic, periphyton; rare (Бондарчук, 1970).
−
*Amphipleura pellucida Kützing – freshwater; periphyton (Dressler, 2003).
+
*''Amphipleura pellucida'' Kützing – freshwater; periphyton (Dressler, 2003).
−
Genus Amphiprora C. G. Ehrenberg
+
Genus ''Amphiprora'' C. G. Ehrenberg
−
*Amphiprora alata Kützing – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970).
+
*''Amphiprora alata'' Kützing – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970).
−
Genus Frustulia Rabenhorst
+
Genus ''Frustulia'' Rabenhorst
−
*Frustulia rhomboides (Ehrenberg) De Toni var. rhomboides – marine. littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970; in addition: F. rhomboides var. saxonica (Rabenhorst) De Toni – littoral, sporadic finding in the Rugozerskaya Bay). Freshwater; periphyton (Dressler, 2003).
+
*''Frustulia rhomboides'' (Ehrenberg) De Toni var. ''rhomboides'' – marine. littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970; in addition: ''F. rhomboides'' var. ''saxonica'' (Rabenhorst) De Toni – littoral, sporadic finding in the Rugozerskaya Bay). Freshwater; periphyton (Dressler, 2003).
 +
Genus ''Halamphora''  (Cleve) Mereschkowsky
 +
*''Halamphora subholsatica'' (Krammer) Levkov - marine, brackish; in the plankton of meromictic lake Trekhtzvetnoe. (Mindolina, 2025).
  
 
===Family Berkeleyaceae D.G. Mann===
 
===Family Berkeleyaceae D.G. Mann===
−
Genus Berkeleya Greville
+
Genus ''Berkeleya'' Greville
−
*Berkeleya rutilans (Trentepohl) Cleve – marine, littoral; benthic, periphyton; everywhere, in some areas dominant (Бондарчук, 1970: as Amphipleura rutilans (Roth) Cleve; in addition, A. rutilans var. antarctica (Harvey) Cleve – rare, together with type variation). Marine, littoral, sublittoral, down to 5 m; benthic (Бондарчук, 1980: as A. rutilans).
+
*''Berkeleya rutilans'' (Trentepohl) Cleve – marine, littoral; benthic, periphyton; everywhere, in some areas dominant (Бондарчук, 1970: as Amphipleura rutilans (Roth) Cleve; in addition, ''A. rutilans'' var. ''antarctica'' (Harvey) Cleve – rare, together with type variation). Marine, littoral, sublittoral, down to 5 m; benthic (Бондарчук, 1980: as A. rutilans).
−
*Berkeleya scopulorum (Brébisson ex Kützing) E. J. Cox – marine, littoral; everywhere, sometimes dominant (Бондарчук, 1970: as Navicula scopulorum Brébisson).
+
*''Berkeleya scopulorum'' (Brébisson ex Kützing) E. J. Cox – marine, littoral; everywhere, sometimes dominant (Бондарчук, 1970: as ''Navicula scopulorum'' Brébisson).
  
 
===Family Brachysiraceae D.G. Mann===
 
===Family Brachysiraceae D.G. Mann===
−
Genus Brachysira Kützing
+
Genus ''Brachysira'' Kützing
−
*Brachysira bacillifer (Maillard) Lange-Bertalot & Moser – freshwater; periphyton (Dressler, 2003).
+
*''Brachysira bacillifer'' (Maillard) Lange-Bertalot & Moser – freshwater; periphyton (Dressler, 2003).
−
*Brachysira brebissonii R. Ross subsp. brebissonii – freshwater; periphyton (Dressler, 2003).
+
*''Brachysira brebissonii'' R. Ross subsp. brebissonii – freshwater; periphyton (Dressler, 2003).
−
*Brachysira styriaca (Grunow) R. Ross – freshwater; periphyton (Dressler, 2003).
+
*''Brachysira styriaca'' (Grunow) R. Ross – freshwater; periphyton (Dressler, 2003).
−
*Brachysira vitrea (Grunow) R. Ross – freshwater; periphyton (Dressler, 2003).
+
*''Brachysira vitrea'' (Grunow) R. Ross – freshwater; periphyton (Dressler, 2003).
−
*Brachysira zellensis (Grunov) Cleve – freshwater; periphyton (Dressler, 2003).
+
*''Brachysira zellensis'' (Grunov) Cleve – freshwater; periphyton (Dressler, 2003).
  
 
===Family Cavinulaceae D.G. Mann===
 
===Family Cavinulaceae D.G. Mann===
−
Genus Cavinula Mann & Stickle
+
Genus ''Cavinula'' Mann & Stickle
−
*Cavinula cocconeiformis (Gregory ex Greville) D. G. Mann & A. J. Stickle – marine, littoral; benthic, periphyton; sporadic (Бондарчук, 1970: as Navicula cocconeiformis Gregory ex Greville).
+
*''Cavinula cocconeiformis'' (Gregory ex Greville) D. G. Mann & A. J. Stickle – marine, littoral; benthic, periphyton; sporadic (Бондарчук, 1970: as ''Navicula cocconeiformis'' Gregory ex Greville).
−
*Cavinula jaernefeltii (Hustedt) D.G. Mann — marine, littoral (Сапожников, 1998: as Navicula jaernefeltii (Hustedt).
+
*''Cavinula jaernefeltii'' (Hustedt) D.G. Mann — marine, littoral (Сапожников, 1998: as ''Navicula jaernefeltii'' (Hustedt).
−
*Cavinula lacustris (W. Gregory) D. G. Mann – marine, littoral, diluted areas; periphyton; rare (Бондарчук, 1970: as Navicula lacustris W. Gregory).
+
*''Cavinula lacustris'' (W. Gregory) D. G. Mann – marine, littoral, diluted areas; periphyton; rare (Бондарчук, 1970: as ''Navicula lacustris'' W. Gregory).
−
*Cavinula pseudoscutiformis (Hustedt) D. G. Mann & A. J. Stickle – freshwater; periphyton (Dressler, 2003: as Navicula pseudoscutiformis Hustedt).
+
*''Cavinula pseudoscutiformis'' (Hustedt) D. G. Mann & A. J. Stickle – freshwater; periphyton (Dressler, 2003: as ''Navicula pseudoscutiformis'' Hustedt).
  
 
===Family Cosmioneidaceae D. G. Mann===
 
===Family Cosmioneidaceae D. G. Mann===
−
Genus Cosmioneis D. G. Mann & Stickle
+
Genus ''Cosmioneis'' D. G. Mann & Stickle
−
*Cosmioneis pusilla (W. Smith) D. G. Mann & A. J. Stickle – marine, littoral; benthic, periphyton; sporadic (Бондарчук, 1970: as Navicula pusilla W. Smith).
+
*''Cosmioneis pusilla'' (W. Smith) D. G. Mann & A. J. Stickle – marine, littoral; benthic, periphyton; sporadic (Бондарчук, 1970: as Navicula pusilla W. Smith).
  
 
===Family Diadesmidaceae D. G. Mann===
 
===Family Diadesmidaceae D. G. Mann===
−
Genus Diadesmis Kützing
+
Genus ''Diadesmis'' Kützing
−
*Diadesmis perpusilla (Grunow) D. G. Mann – marine, littoral, diluted areas; benthic, periphyton; very rare (Бондарчук, 1970: as Navicula perpusilla Grunow).
+
*''Diadesmis perpusilla'' (Grunow) D. G. Mann – marine, littoral, diluted areas; benthic, periphyton; very rare (Бондарчук, 1970: as ''Navicula perpusilla'' Grunow).
−
Genus Luticola D. G. Mann in F. E. Round et al.
+
Genus ''Luticola'' D. G. Mann in F. E. Round et al.
−
*Luticola goeppertiana (Bleisch) D. G. Mann – marine, littoral; rare, everywhere (Бондарчук, 1970: as Navicula mutica f. goeppertiana Bleisch).
+
*''Luticola goeppertiana'' (Bleisch) D. G. Mann – marine, littoral; rare, everywhere (Бондарчук, 1970: as ''Navicula mutica'' f. ''goeppertiana'' Bleisch).
−
*Luticola mutica (Kützing) D. G. Mann – marine, littoral; rare, everywhere (Бондарчук, 1970: as Navicula mutica Kützing).
+
*''Luticola mutica'' (Kützing) D. G. Mann – marine, littoral; rare, everywhere (Бондарчук, 1970: as Navicula mutica Kützing).
  
 
===Family Diploneidaceae D. G. Mann===
 
===Family Diploneidaceae D. G. Mann===
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*''Navicula capitatoradiata'' Germain – freshwater; periphyton (Dressler, 2003).
 
*''Navicula capitatoradiata'' Germain – freshwater; periphyton (Dressler, 2003).
 
*''Navicula cincta'' (Ehrenberg) Kützing – marine, littoral, Rugozerskaya Bay; rare (Бондарчук, 1970).
 
*''Navicula cincta'' (Ehrenberg) Kützing – marine, littoral, Rugozerskaya Bay; rare (Бондарчук, 1970).
−
*''Navicula clementis'' Grunow var. clementis – marine, littoral, sublittoral; benthic, periphyton; rare (Бондарчук, 1970; as N. clementis var. acuta Brock – sporadic, together with type variation).
+
*''Navicula clementis'' Grunow var. ''clementis'' – marine, littoral, sublittoral; benthic, periphyton; rare (Бондарчук, 1970; as ''N. clementis'' var. ''acuta'' Brock – sporadic, together with type variation).
−
*''Navicula complanata'' (Grunow) Grunow – marine, littoral, sublittoral; periphyton; not rare (Бондарчук, 1970: N. complanata Hust.).
+
*''Navicula complanata'' (Grunow) Grunow – marine, littoral, sublittoral; periphyton; not rare (Бондарчук, 1970: ''N. complanata'' Hust.).
 
*''Navicula crucicula'' (W. Smith) Donkin – marine, littoral; sporadic (Бондарчук, 1970).
 
*''Navicula crucicula'' (W. Smith) Donkin – marine, littoral; sporadic (Бондарчук, 1970).
 
*''Navicula crucigeroides'' Hustedt – marine, littoral; rare (Бондарчук, 1970).
 
*''Navicula crucigeroides'' Hustedt – marine, littoral; rare (Бондарчук, 1970).
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*''Navicula frigida'' Grunow — planktonic, dominant in spring, Velikaya Salma (Конопля, 1971).
 
*''Navicula frigida'' Grunow — planktonic, dominant in spring, Velikaya Salma (Конопля, 1971).
 
*''Navicula gastrum'' (Ehrenberg) Kützing var. gastrum – marine, littoral, diluted areas; rare (Бондарчук, 1970; ''N. gastrum'' var. ''latiuscula'' Grunow – Rugozerskaya Bay, sporadic findings). Freshwater; перифит (Dressler, 2003).
 
*''Navicula gastrum'' (Ehrenberg) Kützing var. gastrum – marine, littoral, diluted areas; rare (Бондарчук, 1970; ''N. gastrum'' var. ''latiuscula'' Grunow – Rugozerskaya Bay, sporadic findings). Freshwater; перифит (Dressler, 2003).
−
*''Navicula gelida'' Grunow var. gelida – marine, littoral, sublittoral; benthic, periphyton; rare (Бондарчук, 1970; N. gelida var. subimpressa (Grunow) Cleve – periphyton; sporadic finding in the Rugozerskaya Bay; N. gelida var. tenuis Cleve – sporadic on littoral in the Rugozerskaya Bay.). Marine; littoral species in plankton; common in spring (Конопля, 1971, 1974).
+
*''Navicula gelida'' Grunow var. gelida – marine, littoral, sublittoral; benthic, periphyton; rare (Бондарчук, 1970; ''N. gelida'' var. ''subimpressa'' (Grunow) Cleve – periphyton; sporadic finding in the Rugozerskaya Bay; ''N. gelida'' var. ''tenuis'' Cleve – sporadic on littoral in the Rugozerskaya Bay.). Marine; littoral species in plankton; common in spring (Конопля, 1971, 1974).
 
*''Navicula glaciali''s (Cleve) Cleve var. ''glacialis'' – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970; ''N. glacialis'' var. ''septentrionalis'' Cleve – very rare, together with type variation). Marine; in plankton (Конопля, 1974).
 
*''Navicula glaciali''s (Cleve) Cleve var. ''glacialis'' – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970; ''N. glacialis'' var. ''septentrionalis'' Cleve – very rare, together with type variation). Marine; in plankton (Конопля, 1974).
 
*''Navicula gothlandica'' Grunow – marine, littoral, Rugozerskaya Bay; sporadic finding (Бондарчук, 1970).
 
*''Navicula gothlandica'' Grunow – marine, littoral, Rugozerskaya Bay; sporadic finding (Бондарчук, 1970).
 
*''Navicula granii'' (Jørgensen) Gran – marine, planktonic (Конопля, 1974).
 
*''Navicula granii'' (Jørgensen) Gran – marine, planktonic (Конопля, 1974).
−
*''Navicula gregaria'' Donkin – marine, littoral; rare, everywhere (Бондарчук, 1970). Also in semi-isolated coastal stratified lake Kislo-Sladkoe (Mindolina et al., 2023).
+
*''Navicula gregaria'' Donkin – marine, littoral; rare, everywhere (Бондарчук, 1970). Also in semi-isolated coastal stratified lake Kislo-Sladkoe (Mindolina et al., 2023); in plankt. of meromictic lake Trekhtzvetnoe (Mindolina, 2025; Ivanova, 2025, personal communication).
−
*''Navicula grevilleana'' Hendey – marine, littoral; benthic, periphyton; often (Бондарчук, 1970: N. grevillei Ag.; in addition: N. grevillei var. minir (Ag.) A. Cl. – not rare, in diluted areas).
+
*''Navicula grevilleana'' Hendey – marine, littoral; benthic, periphyton; often (Бондарчук, 1970: ''N. grevillei'' Ag.; in addition: ''N. grevillei'' var.'' minir'' (Ag.) A. Cl. – not rare, in diluted areas).
 
*''Navicula halophila'' (Grunow ex Van Heurck) Cleve – marine, littoral; silty-sandy soil; benthic (Сабурова, 1995).
 
*''Navicula halophila'' (Grunow ex Van Heurck) Cleve – marine, littoral; silty-sandy soil; benthic (Сабурова, 1995).
 
*''Navicula hamulifera'' Grunow – marine, littoral; sporadic (Бондарчук, 1970).
 
*''Navicula hamulifera'' Grunow – marine, littoral; sporadic (Бондарчук, 1970).
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*''Navicula krasskei'' Hustedt – marine, littoral; silty-sandy soil; benthic (Сабурова, 1995).
 
*''Navicula krasskei'' Hustedt – marine, littoral; silty-sandy soil; benthic (Сабурова, 1995).
 
*''Navicula lanceolata'' (C. Agardh) Kützing var. ''lanceolata'' – marine, littoral; sporadic, everywhere (Бондарчук, 1970; in addition: ''N. lanceolata'' var. ''cymbula'' (Donkin) Cleve – sporadic finding on the littoral in the Rugozerskaya Bay; ''N. lanceolata'' var. ''tenella'' Cleve – very rare on the littoral of the Rugozerskaya Bay).  
 
*''Navicula lanceolata'' (C. Agardh) Kützing var. ''lanceolata'' – marine, littoral; sporadic, everywhere (Бондарчук, 1970; in addition: ''N. lanceolata'' var. ''cymbula'' (Donkin) Cleve – sporadic finding on the littoral in the Rugozerskaya Bay; ''N. lanceolata'' var. ''tenella'' Cleve – very rare on the littoral of the Rugozerskaya Bay).  
−
**''N. lanceolata'' var. ''phyllepta'' (Kützing) Cleve – freshwater; periphyton (Dressler, 2003: as N. phyllepta Kützing).
+
**''N. lanceolata'' var. ''phyllepta'' (Kützing) Cleve – freshwater; periphyton (Dressler, 2003: as ''N. phyllepta'' Kützing).
 
*''Navicula latens Krasske'' — marine, littoral (Сапожников, 1998).
 
*''Navicula latens Krasske'' — marine, littoral (Сапожников, 1998).
 
*''Navicula lateropunctata'' J. H. Wallace — marine, common, littoral (Сапожников, 1998).
 
*''Navicula lateropunctata'' J. H. Wallace — marine, common, littoral (Сапожников, 1998).
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*''Navicula monilifera'' var. ''heterosticha'' Cleve — marine, littoral (Сапожников, 1998).
 
*''Navicula monilifera'' var. ''heterosticha'' Cleve — marine, littoral (Сапожников, 1998).
 
*''Navicula oblonga'' (Kützing) Kützing — planktonic, rare, diluted Velikaya Salma (Бондарчук, 1963).
 
*''Navicula oblonga'' (Kützing) Kützing — planktonic, rare, diluted Velikaya Salma (Бондарчук, 1963).
−
*''Navicula palpebralis'' de Brébisson – marine, littoral, sublittoral; rare (Бондарчук, 1970; ''N. palpebralis'' var. ''angulosa'' (Gregory) Van Heurck – together with type variation; N. ''palpebralis'' var. ''minor'' (Gregory) Grunow – together with type variation, less often; N. palpebralis var. semiplena (Gregory) Cleve – very rare on the littoral).
+
*''Navicula palpebralis'' de Brébisson – marine, littoral, sublittoral; rare (Бондарчук, 1970; ''N. palpebralis'' var. ''angulosa'' (Gregory) Van Heurck – together with type variation; N. ''palpebralis'' var. ''minor'' (Gregory) Grunow – together with type variation, less often; ''N. palpebralis'' var. ''semiplena'' (Gregory) Cleve – very rare on the littoral).
 
*''Navicula paradoxa'' Skvortzov — marine, common, littoral (Сапожников, 1998).
 
*''Navicula paradoxa'' Skvortzov — marine, common, littoral (Сапожников, 1998).
 
*''Navicula paucivisitata'' R. M. Patrick — marine, littoral (Сапожников, 1998).
 
*''Navicula paucivisitata'' R. M. Patrick — marine, littoral (Сапожников, 1998).
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*''Navicula pelliculosa'' (Brébisson ex Kützing) Hilse — marine, littoral (Сапожников, 1998).
 
*''Navicula pelliculosa'' (Brébisson ex Kützing) Hilse — marine, littoral (Сапожников, 1998).
 
*''Navicula peregrina'' (Ehrenberg) Kützing – marine, littoral; rare, everywhere (Бондарчук, 1970; ''N. peregrina'' var. ''intermedia ''D. McCall – rare, in diluted littoral areas; ''N. peregrina'' var. ''lanceolata'' Skvortzov – very rare, in diluted littoral areas; ''N. peregrina'' var. ''peregrinoides'' D. McCall – littoral Rugozerskaya Bay, sporadic finding).
 
*''Navicula peregrina'' (Ehrenberg) Kützing – marine, littoral; rare, everywhere (Бондарчук, 1970; ''N. peregrina'' var. ''intermedia ''D. McCall – rare, in diluted littoral areas; ''N. peregrina'' var. ''lanceolata'' Skvortzov – very rare, in diluted littoral areas; ''N. peregrina'' var. ''peregrinoides'' D. McCall – littoral Rugozerskaya Bay, sporadic finding).
 +
*''Navicula perminuta'' Grunow – freshwater, marine and brackish; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
 
*''Navicula placentula'' (Ehrenberg) Grunow – marine, littoral, mouths of brooks; rare (Бондарчук, 1970: as N. placentula Ehr.).
 
*''Navicula placentula'' (Ehrenberg) Grunow – marine, littoral, mouths of brooks; rare (Бондарчук, 1970: as N. placentula Ehr.).
 
*''Navicula plicat''a Donkin – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970).
 
*''Navicula plicat''a Donkin – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970).
 
*''Navicula protracta'' Grunow – marine, littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970; ''N. protracta'' f. ''conspicua'' Korotkevich – together with type variation, rare).
 
*''Navicula protracta'' Grunow – marine, littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970; ''N. protracta'' f. ''conspicua'' Korotkevich – together with type variation, rare).
−
*''Navicula radiosa'' Kützing – marine, littoral, diluted areas; sporadic (Бондарчук, 1970; as ''N. radiosa'' var. ''acuta'' (W. Smith) Grunov – sporadic in the Rugozerskaya Bay; ''N. radiosa'' var. ''tenella'' (Brébisson) Van Heurck – sporadic in the Rugozerskaya Bay). Freshwater; periphyton (Dressler, 2003).
+
*''Navicula radiosa'' Kützing – marine, littoral, diluted areas; sporadic (Бондарчук, 1970; as ''N. radiosa'' var. ''acuta'' (W. Smith) Grunov – sporadic in the Rugozerskaya Bay; ''N. radiosa'' var. ''tenella'' (Brébisson) Van Heurck – sporadic in the Rugozerskaya Bay). Freshwater; periphyton (Dressler, 2003). In the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025; Ivanova, 2025, personal communication).
−
*''Navicula ramosissima'' (C. Agardh) Cleve – marine, littoral, sublittoral; benthic, periphyton; sometimes abundant (Бондарчук, 1970: N. ramosissima Ag.; N. ramosissima var. amplia Grunow – very rare, together with type variation).
+
*''Navicula ramosissima'' (C. Agardh) Cleve – marine, littoral, sublittoral; benthic, periphyton; sometimes abundant (Бондарчук, 1970: ''N. ramosissima'' Ag.; ''N. ramosissima'' var. ''amplia'' Grunow – very rare, together with type variation).
 
*''Navicula reichardtii'' Grunow – marine, littoral, sublittoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970; as ''N. reichardtii'' var. ''tschutchschorum'' (Cleve) Cleve – together with type variation, not rare).
 
*''Navicula reichardtii'' Grunow – marine, littoral, sublittoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970; as ''N. reichardtii'' var. ''tschutchschorum'' (Cleve) Cleve – together with type variation, not rare).
−
*''Navicula rhynchocephala'' Kützing – marine, littoral; sporadic, everywhere (Бондарчук, 1970; as ''N. rhynchocephala'' var. ''amphiceros'' (Kützing) Grunow – everywhere, not abundant). Freshwater; periphyton (Dressler, 2003).
+
*''Navicula rhynchocephala'' Kützing – marine, littoral; sporadic, everywhere (Бондарчук, 1970; as ''N. rhynchocephala'' var. ''amphiceros'' (Kützing) Grunow – everywhere, not abundant). Freshwater; periphyton (Dressler, 2003); in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
−
*''Navicula rostellata'' Kützing – marine, littoral; sporadic, everywhere (Бондарчук, 1970; N. rostellata var. major Kützing – sporadic finding in the Rugozerskaya Bay; N. rostellata var. minor Van Heurck – sporadic, together with type variation). Freshwater; periphyton (Dressler, 2003).
+
*''Navicula rostellata'' Kützing – marine, littoral; sporadic, everywhere (Бондарчук, 1970; ''N. rostellata'' var. ''major'' Kützing – sporadic finding in the Rugozerskaya Bay; ''N. rostellata'' var. ''minor'' Van Heurck – sporadic, together with type variation). Freshwater; periphyton (Dressler, 2003).
 
*''Navicula salinarum'' Grunow – marine, littoral; benthic, periphyton; in some areas dominant (Бондарчук, 1970). Littoral, corner of the Rugozerskaya Bay, diluted areas; silty soil; dominant (Бондарчук, 1980а). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995).
 
*''Navicula salinarum'' Grunow – marine, littoral; benthic, periphyton; in some areas dominant (Бондарчук, 1970). Littoral, corner of the Rugozerskaya Bay, diluted areas; silty soil; dominant (Бондарчук, 1980а). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995).
 
*''Navicula scutelloides'' W. Smith – marine, littoral, Rugozerskaya Bay; sporadic finding (Бондарчук, 1970).
 
*''Navicula scutelloides'' W. Smith – marine, littoral, Rugozerskaya Bay; sporadic finding (Бондарчук, 1970).
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*''Navicula subtilissima'' Cleve – freshwater; periphyton (Dressler, 2003).
 
*''Navicula subtilissima'' Cleve – freshwater; periphyton (Dressler, 2003).
 
*''Navicula transitans'' Cleve – marine, littoral, Rugozerskaya Bay; benthic, periphyton; sporadic (Бондарчук, 1970; ''N. transitans'' var. ''asymmetrica'' (Cleve) Cleve – sporadic finding in fouling; N. transitans var. derasa (Grunow) Cleve – sporadic; N. transitans var. derasa f. minuta (Cleve) Cleve – sporadic finding).
 
*''Navicula transitans'' Cleve – marine, littoral, Rugozerskaya Bay; benthic, periphyton; sporadic (Бондарчук, 1970; ''N. transitans'' var. ''asymmetrica'' (Cleve) Cleve – sporadic finding in fouling; N. transitans var. derasa (Grunow) Cleve – sporadic; N. transitans var. derasa f. minuta (Cleve) Cleve – sporadic finding).
−
*''Navicula tripunctata'' (O.F. Müller) Bory – marine, littoral; sporadic (Бондарчук, 1970: as N. gracilis Ehrenberg). Marine, littoral; silty-sandy soil; benthic (Сабурова, 1995: as N. gracilis). Freshwater; periphyton (Dressler, 2003).
+
*''Navicula tripunctata'' (O.F. Müller) Bory – marine, littoral; sporadic (Бондарчук, 1970: as ''N. gracilis'' Ehrenberg). Marine, littoral; silty-sandy soil; benthic (Сабурова, 1995: as ''N. gracilis''). Freshwater; periphyton (Dressler, 2003).
 
*''Navicula unipunctata'' Skvortzov — marine, littoral (Сапожников, 1998).
 
*''Navicula unipunctata'' Skvortzov — marine, littoral (Сапожников, 1998).
 
*''Navicula upsaliensis'' Grunow – freshwater; periphyton (Dressler, 2003).
 
*''Navicula upsaliensis'' Grunow – freshwater; periphyton (Dressler, 2003).
 
*''Navicula vanhoeffenii'' Gran – marine; planktonic; dominant in spring (Конопля, 1971, 1974).
 
*''Navicula vanhoeffenii'' Gran – marine; planktonic; dominant in spring (Конопля, 1971, 1974).
−
*''Navicula veneta'' Kützing – marine, littoral; sporadic, together with N. cryptocephala (Бондарчук, 1970: N. cryptocephala var. veneta (Kützing) Rabenhorst).
+
*''Navicula veneta'' Kützing – marine, littoral; sporadic, together with ''N. cryptocephala'' (Бондарчук, 1970: ''N. cryptocephala'' var. ''veneta'' (Kützing) Rabenhorst). In plankt. of meromictic lake Trekhtzventnoe (Mindolina, 2025).
 
*''Navicula verecunda'' Hustedt — marine, littoral (Сапожников, 1998).
 
*''Navicula verecunda'' Hustedt — marine, littoral (Сапожников, 1998).
 
*''Navicula viridula'' (Kützing) Kützing – marine, littoral, mouths of brooks; benthic, periphyton; rare (Бондарчук, 1970; as ''N. viridula'' var. ''avenacea'' (Brébisson) Grunow – rare, together with type variation). Freshwater; periphyton (Dressler, 2003).
 
*''Navicula viridula'' (Kützing) Kützing – marine, littoral, mouths of brooks; benthic, periphyton; rare (Бондарчук, 1970; as ''N. viridula'' var. ''avenacea'' (Brébisson) Grunow – rare, together with type variation). Freshwater; periphyton (Dressler, 2003).
−
*Navicula vulpina'' Kützing – marine, littoral, diluted areas; rare (Бондарчук, 1970).
+
*''Navicula vulpina'' Kützing – marine, littoral, diluted areas; rare (Бондарчук, 1970).
 
*''Navicula wildii'' Lange-Bertalot – freshwater; periphyton (Dressler, 2003).
 
*''Navicula wildii'' Lange-Bertalot – freshwater; periphyton (Dressler, 2003).
 
Genus ''Pseudogomphonema'' L. K. Medlin in L. K. Medlin & F. E. Round
 
Genus ''Pseudogomphonema'' L. K. Medlin in L. K. Medlin & F. E. Round
Line 168: Line 171:
  
 
===Family Neidiaceae Mereschkowsky===
 
===Family Neidiaceae Mereschkowsky===
−
Genus Neidium Pfitzer
+
Genus ''Neidium'' Pfitzer
−
*Neidium affine (Ehrenberg) Pfizer – marine, littoral; diluted areas; rare (Бондарчук, 1970: as N. affine (Ehrenberg) Cleve).
+
*''Neidium affine'' (Ehrenberg) Pfizer – marine, littoral; diluted areas; rare (Бондарчук, 1970: as ''N. affine'' (Ehrenberg) Cleve).
−
*Neidium ampliatum (Ehrenberg) Krammer – freshwater; periphyton (Dressler, 2003).
+
*''Neidium ampliatum'' (Ehrenberg) Krammer – freshwater; periphyton (Dressler, 2003); in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
−
*Neidium dubium (Ehrenberg) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970: as N. dubium Ehenberg).
+
*''Neidium bisulcatum'' (Lagerstedt) Cleve – freshwater; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
−
*Neidium globiceps (A. Cleve) A. Cleve – marine, littoral, Rugozerskaya Bay; sporadic finding in the mouth of a brook (Бондарчук, 1970: as N. globiceps A. Cleve).
+
*''Neidium dubium'' (Ehrenberg) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970: as N. dubium Ehenberg).
 +
*''Neidium globiceps'' (A. Cleve) A. Cleve – marine, littoral, Rugozerskaya Bay; sporadic finding in the mouth of a brook (Бондарчук, 1970: as ''N. globiceps'' A. Cleve).
  
 
===Family Pinnulariaceae D. G. Mann===
 
===Family Pinnulariaceae D. G. Mann===
−
Genus Pinnularia Ehrenberg  
+
Genus ''Mayamaea'' Lange-Bert.
−
*Pinnularia abaujensis (Pantocsek) R. Ross var. linearis (Hustedt) R.M. Patrick – freshwater; periphyton (Dressler, 2003: as P. gibba var. linearis Hustedt).
+
*''Mayamaea disjuncta'' (Hustedt) J.Y. Li & Y.Z.Qi 2018 – freshwater; in plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
−
*Pinnularia ambigua Cleve – marine, littoral; sporadic, everywhere (Бондарчук, 1970).
+
Genus ''Pinnularia'' Ehrenberg  
−
*Pinnularia biceps W. Gregory – freshwater; periphyton (Dressler, 2003).
+
*''Pinnularia abaujensis'' (Pantocsek) R. Ross var. linearis (Hustedt) R.M. Patrick – freshwater; periphyton (Dressler, 2003: as P. gibba var. linearis Hustedt).
−
*Pinnularia borealis Ehrenberg – marine, littoral; sporadic (Бондарчук, 1970).
+
*Pinnularia ambigua'' Cleve – marine, littoral; sporadic, everywhere (Бондарчук, 1970).
−
*Pinnularia cruciformis (Donkin) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970). Marine; in plankton (Конопля, 1974).
+
*''Pinnularia biceps'' W. Gregory – freshwater; periphyton (Dressler, 2003).
−
*Pinnularia fasciata Lagerstedt - marine, littoral (Сапожников, 1998).
+
*''Pinnularia borealis'' Ehrenberg – marine, littoral; sporadic (Бондарчук, 1970).
−
*Pinnularia gibba (Ehrenberg) Ehrenberg var. gibba – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998).
+
*''Pinnularia cruciformis'' (Donkin) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970). Marine; in plankton (Конопля, 1974).
−
*Pinnularia gibbiformis K. Krammer – freshwater; periphyton (Dressler, 2003).
+
*''Pinnularia fasciata'' Lagerstedt - marine, littoral (Сапожников, 1998).
−
*Pinnularia globiceps W. Gregory – marine, littoral, significantly diluted areas; sporadic (Бондарчук, 1970).
+
*''Pinnularia gibba'' (Ehrenberg) Ehrenberg var. gibba – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998).
−
*Pinnularia hemiptera (Kützing) Cleve – marine, littoral; Rugozerskaya Bay; sporadic finding (Бондарчук, 1970).
+
*''Pinnularia gibbiformis'' K. Krammer – freshwater; periphyton (Dressler, 2003).
−
*Pinnularia interrupta W. Smith – marine, littoral; sporadic (Бондарчук, 1970). Freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
+
*''Pinnularia globiceps'' W. Gregory – marine, littoral, significantly diluted areas; sporadic (Бондарчук, 1970).
−
*Pinnularia major (Kützing) Cleve — planktonic, rare, diluted Velikaya Salma (Бондарчук, 1963); planktonic, benthic, common, brackish-water, freshwater, Kindo peninsula.
+
*''Pinnularia hemiptera'' (Kützing) Cleve – marine, littoral; Rugozerskaya Bay; sporadic finding (Бондарчук, 1970).
−
*Pinnularia mesolepta (Ehrenberg) W. Smith – marine, littoral; sporadic (Бондарчук, 1970).
+
*''Pinnularia interrupta'' W. Smith – marine, littoral; sporadic (Бондарчук, 1970). Freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
−
*Pinnularia neomajor Krammer – freshwater; periphyton (Dressler, 2003).
+
*''Pinnularia major'' (Kützing) Cleve — planktonic, rare, diluted Velikaya Salma (Бондарчук, 1963); planktonic, benthic, common, brackish-water, freshwater, Kindo peninsula.
−
*Pinnularia pseudogibba K. Krammer var. pseudogibba – freshwater; periphyton (Dressler, 2003).
+
*''Pinnularia mesolepta'' (Ehrenberg) W. Smith – marine, littoral; sporadic (Бондарчук, 1970).
−
*Pinnularia quadratarea (A. Schmidt) Cleve – marine, littoral; not rare, everywhere (Бондарчук, 1970; P. quadratarea var. baltica (A. Grunow) P. T. Cleve – together with type variation; P. quadratarea var. minor (E. V. Østrup) H. Heiden (P. quadratarea var. minor Grun.) – rare, together with type variation; P. quadratarea var. Soderlundii Cleve – rare, together with type variation). Marine, in plankton (Конопля, 1974). Littoral, corner of the Rugozerskaya Bay; silty soil; dominant (Бондарчук, 1980а).
+
*''Pinnularia neomajor'' Krammer – freshwater; periphyton (Dressler, 2003).
−
*Pinnularia stauroptera (Grunov) Rabenhorst – marine, littoral, significantly diluted areas; sporadic (Бондарчук, 1970: P. stauroptera Grun.).
+
*''Pinnularia pseudogibba'' K. Krammer var. pseudogibba – freshwater; periphyton (Dressler, 2003).
−
*Pinnularia stomatophora Grunow – marine, littoral, Rugozerskaya Bay; sporadic finding in the mouth of a brook (Бондарчук, 1970). Freshwater; periphyton (Dressler, 2003: P. cf. stomatophora).
+
*''Pinnularia quadratarea'' (A. Schmidt) Cleve – marine, littoral; not rare, everywhere (Бондарчук, 1970; P. quadratarea var. baltica (A. Grunow) P. T. Cleve – together with type variation; ''P. quadratarea'' var. ''minor'' (E. V. Østrup) H. Heiden (''P. quadratarea'' var. ''minor'' Grun.) – rare, together with type variation; ''P. quadratarea'' var. ''Soderlundii'' Cleve – rare, together with type variation). Marine, in plankton (Конопля, 1974). Littoral, corner of the Rugozerskaya Bay; silty soil; dominant (Бондарчук, 1980а).
−
*Pinnularia subcapitata W. Gregory – freshwater; periphyton (Dressler, 2003).
+
*''Pinnularia stauroptera'' (Grunov) Rabenhorst – marine, littoral, significantly diluted areas; sporadic (Бондарчук, 1970: P. stauroptera Grun.).
−
*Pinnularia subgibba Krammer – freshwater; periphyton (Dressler, 2003).
+
*''Pinnularia stomatophora'' Grunow – marine, littoral, Rugozerskaya Bay; sporadic finding in the mouth of a brook (Бондарчук, 1970). Freshwater; periphyton (Dressler, 2003: P. cf. stomatophora).
−
*Pinnularia viridis (Nitzsch) Ehrenberg – marine, littoral; sporadic, everywhere (Бондарчук, 1970; P. viridis var. commutata (Grunow) Cleve – sporadic finding in the Rugozerskaya Bay; P. viridis var. leptogongyla (Ehrenberg) Grunow – sporadic finding in the Rugozerskaya Bay; P. viridis var. sudetica (Hilse) Husted – sporadic, everywhere). freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
+
*''Pinnularia subcapitata'' W. Gregory – freshwater; periphyton (Dressler, 2003).
 +
*''Pinnularia subgibba'' Krammer – freshwater; periphyton (Dressler, 2003).
 +
*''Pinnularia viridis'' (Nitzsch) Ehrenberg – marine, littoral; sporadic, everywhere (Бондарчук, 1970; ''P. viridis'' var. ''commutata'' (Grunow) Cleve – sporadic finding in the Rugozerskaya Bay; ''P. viridis'' var. ''leptogongyla'' (Ehrenberg) Grunow – sporadic finding in the Rugozerskaya Bay; ''P. viridis'' var. ''sudetica'' (Hilse) Husted – sporadic, everywhere). freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
  
 
===Family Plagiotropidaceae D.G. Mann===
 
===Family Plagiotropidaceae D.G. Mann===
−
Genus Tropidoneis Cleve
+
Genus ''Tropidoneis'' Cleve
−
*Tropidoneis lepidoptera (Gregory) Cleve var. lepidoptera – marine, littoral; sporadic, everywhere (Бондарчук, 1970: T. lepidoptera (Gregory) Cleve). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995). Marine, littoral, estuary of the Chernaya River; benthic; common (Azovsky et al., 2004).
+
*''Tropidoneis lepidoptera'' (Gregory) Cleve var. ''lepidoptera'' – marine, littoral; sporadic, everywhere (Бондарчук, 1970: ''T. lepidoptera'' (Gregory) Cleve). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995). Marine, littoral, estuary of the Chernaya River; benthic; common (Azovsky et al., 2004).
−
*Tropidoneis vitrea (W. Smith) Cleve – marine, littoral; sporadic, everywhere (Бондарчук, 1970: T. vitrea W. Sm.).
+
*''Tropidoneis vitrea'' (W. Smith) Cleve – marine, littoral; sporadic, everywhere (Бондарчук, 1970: T. vitrea W. Sm.).
  
 
===Family Pleurosigmataceae Mereschkowsky===
 
===Family Pleurosigmataceae Mereschkowsky===
−
Genus Gyrosigma Hassall
+
Genus ''Gyrosigma'' Hassall
−
*Gyrosigma acuminatum (Kützing) Rabenhorst – marine, littoral, sublittoral; benthic, periphyton; everywhere, not abundant (Бондарчук, 1970; as G. acuminatum var. gallica Grunow – together with type variation, less often). Freshwater; periphyton (Dressler, 2003).
+
*''Gyrosigma acuminatum'' (Kützing) Rabenhorst – marine, littoral, sublittoral; benthic, periphyton; everywhere, not abundant (Бондарчук, 1970; as G. acuminatum var. gallica Grunow – together with type variation, less often). Freshwater; periphyton (Dressler, 2003).
−
*Gyrosigma arcticum (Cleve) Cleve – marine, littoral, sublittoral; benthic, periphyton; everywhere, not abundant (Бондарчук, 1970). Marine; in plankton (Конопля, 1974).
+
*''Gyrosigma arcticum'' (Cleve) Cleve – marine, littoral, sublittoral; benthic, periphyton; everywhere, not abundant (Бондарчук, 1970). Marine; in plankton (Конопля, 1974).
−
*Gyrosigma attenuatum (Kützing) Rabenhorst – marine, littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970).
+
*''Gyrosigma attenuatum'' (Kützing) Rabenhorst – marine, littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970).
−
*Gyrosigma balticum (Ehrenberg) Rabenhorst – marine, littoral, diluted areas; in some areas abundant (Бондарчук, 1970).
+
*''Gyrosigma balticum'' (Ehrenberg) Rabenhorst – marine, littoral, diluted areas; in some areas abundant (Бондарчук, 1970).
−
*Gyrosigma compactum (Greville) Cleve – marine, littoral; benthic, periphyton; rare (Бондарчук, 1970).
+
*''Gyrosigma compactum'' (Greville) Cleve – marine, littoral; benthic, periphyton; rare (Бондарчук, 1970).
−
*Gyrosigma distortum (W. Smith) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970:as G. distortum W. Sm.).
+
*''Gyrosigma distortum'' (W. Smith) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970:as G. distortum W. Sm.).
−
*Gyrosigma fasciola (Ehrenberg) J. W. Griffith & Henfrey – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970; G. fasciola var. prolongatum (W. Smith) Cleve (G. fasciola var. prolongatum W. Sm.) – together with type variation). Marine, littoral; silty-sandy soil; benthic; (Сабурова, 1995).
+
*''Gyrosigma fasciola'' (Ehrenberg) J. W. Griffith & Henfrey – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970; ''G. fasciola'' var. ''prolongatum'' (W. Smith) Cleve (''G. fasciola'' var. ''prolongatum'' W. Sm.) – together with type variation). Marine, littoral; silty-sandy soil; benthic; (Сабурова, 1995).
−
*Gyrosigma kuetzingii (Grunow) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970).
+
*''Gyrosigma kuetzingii'' (Grunow) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970).
−
*Gyrosigma littorale (W. Smith) Griffith & Henfrey – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970: G. littorale W. Sm.).
+
*''Gyrosigma littorale'' (W. Smith) Griffith & Henfrey – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970: G. littorale W. Sm.).
−
*Gyrosigma macrum (W. Smith) Cleve – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1963, 1970).
+
*''Gyrosigma macrum'' (W. Smith) Cleve – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1963, 1970).
−
*Gyrosigma prolongatum (W. Smith) J. W. Griffith & Henfrey var. closterioides (Grunow) Cleve – sporadic finding on the sublittoral, 10 m, near the Velichaikha island (Бондарчук, 1970).
+
*''Gyrosigma obscurum'' (Smith) Griffith & Henfrey - freshwater, brackish; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025; Ivanova, 2025, personal communication).
−
*Gyrosigma rectum (Donkin) Cleve – marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995). Marine, littoral, estuary of the Chernaya River; benthic; common (Azovsky et al., 2004: Donkinia recta (Donkin) Grunow).
+
*''Gyrosigma prolongatum'' (W. Smith) J. W. Griffith & Henfrey var. closterioides (Grunow) Cleve – sporadic finding on the sublittoral, 10 m, near the Velichaikha island (Бондарчук, 1970).
−
*Gyrosigma scalproides (Rabenhorst) Cleve – marine, littoral, diluted areas; sporadic (Бондарчук, 1970).
+
*''Gyrosigma rectum'' (Donkin) Cleve – marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995). Marine, littoral, estuary of the Chernaya River; benthic; common (Azovsky et al., 2004: Donkinia recta (Donkin) Grunow).
−
*Gyrosigma spenceri (W. Smith) Griffith & Henfrey – marine, littoral; benthic, periphyton; often in diluted areas (Бондарчук, 1970: G. spenceri (W. Sm.) Cl.).
+
*''Gyrosigma scalproides'' (Rabenhorst) Cleve – marine, littoral, diluted areas; sporadic (Бондарчук, 1970).
−
*Gyrosigma strigile (W. Smith) Cleve — marine, littoral (Сапожников, 1998); epiphyte on  macrophytic algae, common, littoral, sublittoral, Velikaya Salma
+
*''Gyrosigma spenceri'' (W. Smith) Griffith & Henfrey – marine, littoral; benthic, periphyton; often in diluted areas (Бондарчук, 1970: G. spenceri (W. Sm.) Cl.).
−
*Gyrosigma tenuissimum (W. Smith) Griffith & Henfrey – marine, littoral; sporadic (Бондарчук, 1970; G. tenuissimum var. hyperborea Grun. – sporadic). Marine; in plankton (Конопля, 1974).
+
*''Gyrosigma strigile'' (W. Smith) Cleve — marine, littoral (Сапожников, 1998); epiphyte on  macrophytic algae, common, littoral, sublittoral, Velikaya Salma
−
*Gyrosigma wansbeckii (Donkin) Cleve – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970).
+
*''Gyrosigma tenuissimum'' (W. Smith) Griffith & Henfrey – marine, littoral; sporadic (Бондарчук, 1970; G. tenuissimum var. hyperborea Grun. – sporadic). Marine; in plankton (Конопля, 1974).
−
Genus Pleurosigma W. Smith  
+
*''Gyrosigma wansbeckii'' (Donkin) Cleve – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970).
−
*Pleurosigma aestuarii (Brébisson ex Kützing) W. Smith – marine, littoral, diluted areas; in some areas abundant (Бондарчук, 1970). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995).
+
Genus ''Pleurosigma'' W. Smith  
−
*Pleurosigma angulatum (Queckett) W. Smith – marine, littoral; not rare, everywhere (Бондарчук, 1970). Marine; in plankton (Конопля, 1974). Freshwater; periphyton (Dressler, 2003).
+
*''Pleurosigma aestuarii'' (Brébisson ex Kützing) W. Smith – marine, littoral, diluted areas; in some areas abundant (Бондарчук, 1970). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995).
−
*Pleurosigma elongatum W. Smith – marine, littoral, sublittoral; benthic, periphyton; everywhere, in some areas dominant (Бондарчук, 1970; as P. elongatum var. fallax Grun. – rare, together with type variation; P. elongatum var. kariana Grun. – rare, together with type variation). Marine; in plankton (Конопля, 1974). Marine, littoral, corner of the Rugozerskaya Bay; silty soil; dominant (Бондарчук, 1980а).
+
*''Pleurosigma angulatum'' (Queckett) W. Smith – marine, littoral; not rare, everywhere (Бондарчук, 1970). Marine; in plankton (Конопля, 1974). Freshwater; periphyton (Dressler, 2003).
−
*Pleurosigma finnmarchicum Grunow – marine, littoral; not rare, together with P. angulatum (Бондарчук, 1970: P. angulatum var. finmarchicum (Grunow) Cleve).
+
*''Pleurosigma elongatum'' W. Smith – marine, littoral, sublittoral; benthic, periphyton; everywhere, in some areas dominant (Бондарчук, 1970; as ''P. elongatum'' var. ''fallax'' Grun. – rare, together with type variation; ''P. elongatum'' var. ''kariana'' Grun. – rare, together with type variation). Marine; in plankton (Конопля, 1974). Marine, littoral, corner of the Rugozerskaya Bay; silty soil; dominant (Бондарчук, 1980а).
−
*Pleurosigma intermedium W. Smith – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970; as P. intermedium, P. nubecula W. Smith, P. nubecula var. intermedium (W. Smith) Cleve).
+
*''Pleurosigma finnmarchicum'' Grunow – marine, littoral; not rare, together with P. angulatum (Бондарчук, 1970: P. angulatum var. finmarchicum (Grunow) Cleve).
−
*Pleurosigma longum Cleve – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970).
+
*''Pleurosigma intermedium'' W. Smith – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970; as P. intermedium, P. nubecula W. Smith, P. nubecula var. intermedium (W. Smith) Cleve).
−
*Pleurosigma normanii Ralfs – marine, littoral, sublittoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970).
+
*''Pleurosigma longum'' Cleve – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970).
−
*Pleurosigma salinarum (Grunow) Grunow – marine, littoral, Rugozerskaya Bay; rare (Бондарчук, 1970).
+
*''Pleurosigma normanii'' Ralfs – marine, littoral, sublittoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970).
−
*Pleurosigma strigosum W. Smith – marine, littoral; rare, together with P. angulatum (Бондарчук, 1970: P. angulatum var. strigosum (W. Smith) Van Heurck).
+
*''Pleurosigma salinarum'' (Grunow) Grunow – marine, littoral, Rugozerskaya Bay; rare (Бондарчук, 1970).
−
*Pleurosigma stuxbergii Cleve & Grunow — planktonic, rare, summer, Velikaya Salma (Бондарчук, 1963).
+
*''Pleurosigma strigosum'' W. Smith – marine, littoral; rare, together with ''P. angulatum'' (Бондарчук, 1970: ''P. angulatum'' var. ''strigosum'' (W. Smith) Van Heurck).
−
*Pleurosigma subrigidum Grunow – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970).
+
*''Pleurosigma stuxbergii'' Cleve & Grunow — planktonic, rare, summer, Velikaya Salma (Бондарчук, 1963).
 +
*''Pleurosigma subrigidum'' Grunow – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970).
  
 
===Family Scoliotropidaceae Mereschkowsky===
 
===Family Scoliotropidaceae Mereschkowsky===
−
Genus Scoliopleura Grunow
+
Genus ''Scoliopleura'' Grunow
−
*Scoliopleura tumida (Brébisson ex Kützing) Rabenhorst – marine, littoral; rare, everywhere (Бондарчук, 1970: as S. tumida Bréb.)
+
*''Scoliopleura tumida'' (Brébisson ex Kützing) Rabenhorst – marine, littoral; rare, everywhere (Бондарчук, 1970: as S. tumida Bréb.)
−
Genus Scoliotropis Cleve
+
Genus ''Scoliotropis'' Cleve
−
*Scoliotropis latestriata (Brébisson ex Kützing) Cleve – marine, littoral; rare (Бондарчук, 1970; Сапожников, 1998).
+
*''Scoliotropis latestriata'' (Brébisson ex Kützing) Cleve – marine, littoral; rare (Бондарчук, 1970; Сапожников, 1998).
  
 
===Family Sellaphoraceae Mereschkowsky===
 
===Family Sellaphoraceae Mereschkowsky===
−
Genus Fallacia Stickle & Mann
+
Genus ''Fallacia'' Stickle & Mann
−
*Fallacia forcipata (Greville) Stickle & Mann (=Navicula forcipata Greville) – marine, littoral; benthic, periphyton; everywhere, sometimes abundant (Бондарчук, 1970; N. forcipata var. densestriata A.W.F. Schmidt – everywhere, sometimes abundant; N. forcipata var. versicolor Grunow – sporadic finding in the Rugozerskaya Bay). Marine; in plankton (Конопля, 1971; Конопля, 1974). Marine, littoral, corner of the Rugozerskaya Bay, diluted areas; silty soil (Бондарчук, 1980а).
+
*''Fallacia'' cf. ''cryptolyra'' (Brockmann) Stickle & Mann - freshwater; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
−
*Fallacia hyalinula (De Toni) Stickle & Mann – marine, littoral, sublittoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970: Navicula cf. plathi Brockmann).
+
*''Fallacia forcipata'' (Greville) Stickle & Mann (=''Navicula forcipata'' Greville) – marine, littoral; benthic, periphyton; everywhere, sometimes abundant (Бондарчук, 1970; ''N. forcipata'' var. ''densestriata'' A.W.F. Schmidt – everywhere, sometimes abundant; ''N. forcipata'' var. ''versicolor'' Grunow – sporadic finding in the Rugozerskaya Bay). Marine; in plankton (Конопля, 1971; Конопля, 1974). Marine, littoral, corner of the Rugozerskaya Bay, diluted areas; silty soil (Бондарчук, 1980а).
−
*Fallacia litoricola (Hustedt) D. G. Mann – marine, littoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970: Navicula litoricola Hustedt).
+
*''Fallacia hyalinula'' (De Toni) Stickle & Mann – marine, littoral, sublittoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970: ''Navicula cf. plathi'' Brockmann).
−
*Fallacia pygmaea (Kützing) A. J. Stickle & D. G. Mann – marine, littoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970: Navicula pygmaea Kützing).
+
*''Fallacia litoricola'' (Hustedt) D. G. Mann – marine, littoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970: ''Navicula litoricola'' Hustedt).
−
*Fallacia subforcipata (Hustedt) Mann – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970: Navicula subforcipata Hustedt).
+
*''Fallacia pygmaea'' (Kützing) A. J. Stickle & D. G. Mann – marine, littoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970: ''Navicula pygmaea'' Kützing). In the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
−
Genus Sellaphora Mereschkovsky
+
*''Fallacia subforcipata'' (Hustedt) Mann – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970: ''Navicula subforcipata'' Hustedt).
−
*Sellaphora bacillum (Ehrenberg) D. G. Mann – marine, littoral; benthic; everywhere, sometimes abundant (Бондарчук, 1970: Navicula bacillum Ehrenberg).
+
Genus ''Sellaphora'' Mereschkovsky
−
*Sellaphora pupula (Kützing) Mereschkovsky – marine, littoral, diluted areas; benthic; rare (Бондарчук, 1970: Navicula pupula Kützing; N. pupula var. capitata Hustedt – sporadic, together with type variation; N. pupula var. elliptica Hustedt – sporadic finding in the Rugozerskaya Bay). Marine, littoral; silty-sandy soil; benthic (Сабурова, 1995: N. pupula var. rostrata (Hustedt) J.R. Johansen). Freshwater; periphyton (Dressler, 2003: N. pupula var. pupula).
+
*''Sellaphora bacillum'' (Ehrenberg) D. G. Mann – marine, littoral; benthic; everywhere, sometimes abundant (Бондарчук, 1970: ''Navicula bacillum'' Ehrenberg).
 +
*''Sellaphora laevissima'' (Kützing) D.G.Mann – freshwater; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
 +
*''Sellaphora pupula'' (Kützing) Mereschkovsky – marine, littoral, diluted areas; benthic; rare (Бондарчук, 1970: ''Navicula pupula'' Kützing; ''N. pupula'' var. ''capitata'' Hustedt – sporadic, together with type variation; ''N. pupula'' var. ''elliptica'' Hustedt – sporadic finding in the Rugozerskaya Bay). Marine, littoral; silty-sandy soil; benthic (Сабурова, 1995: ''N. pupula'' var. ''rostrata'' (Hustedt) J.R. Johansen). Freshwater; periphyton (Dressler, 2003: ''N. pupula'' var. ''pupula''). In the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
 +
*''Sellaphora saugerresii'' (Desmazières) Wetzel & Mann - Marine; freshwater.  In the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  
 
===Family Stauroneidaceae D.G. Mann===
 
===Family Stauroneidaceae D.G. Mann===
−
Genus Craticula Grunow
+
Genus ''Craticula'' Grunow
−
*Craticula ambigua (Ehrenberg) D. G. Mann – freshwater; periphyton (Dressler, Hübener, 2002; Dressler, 2003).
+
*''Craticula ambigua'' (Ehrenberg) D. G. Mann – freshwater; periphyton (Dressler, Hübener, 2002; Dressler, 2003).
−
Genus Stauroneis Ehrenberg
+
Genus ''Stauroneis'' Ehrenberg
−
*Stauroneis acuta W. Smith — planktonic, common, Vodoprovodnoye (Potable water) Lake.
+
*''Stauroneis acuta'' W. Smith — planktonic, common, Vodoprovodnoye (Potable water) Lake.
−
*Stauroneis anceps Ehrenberg – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
+
*''Stauroneis anceps'' Ehrenberg – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
−
*Stauroneis phoenicenteron Ehrenberg – marine, littoral, diluted areas; benthic; rare (Бондарчук, 1970). Freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
+
*''Stauroneis phoenicenteron'' Ehrenberg – marine, littoral, diluted areas; benthic; rare (Бондарчук, 1970). Freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
−
*Stauroneis prominula (Grunov) Hustedt – marine, littoral, Rugozerskaya Bay; sporadic finding (Бондарчук, 1970: S. parvula var. prominula Grunow ex Cleve).
+
*''Stauroneis prominula'' (Grunov) Hustedt – marine, littoral, Rugozerskaya Bay; sporadic finding (Бондарчук, 1970: ''S. parvula'' var. ''prominula'' Grunow ex Cleve).
−
*Stauroneis salina W. Smith – marine, littoral; benthic; everywhere, sometimes abundant (Бондарчук, 1970).
+
*''Stauroneis salina'' W. Smith – marine, littoral; benthic; everywhere, sometimes abundant (Бондарчук, 1970).
−
*Stauroneis smithii Grunow var. incisa Pantoczek — marine, littoral (Сапожников, 1998).
+
*''Stauroneis smithii'' Grunow var. ''incisa'' Pantoczek — marine, littoral (Сапожников, 1998).
 +
 
 +
===Incertae sedis===
 +
Genus ''Mayamaea''  Lange-Bert.
 +
*''Mayamaea disjuncta'' (Hustedt) J.Y. Li & Y.Z.Qi 2018 – freshwater; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  
 
[[rus: Порядок Naviculales]]
 
[[rus: Порядок Naviculales]]

Latest revision as of 22:03, 7 November 2025

Family Amphipleuraceae Grunow

Genus Amphipleura Kützing

  • Amphipleura micans (Lyngbye) Cleve – marine, littoral; benthic, periphyton; rare (Бондарчук, 1970).
  • Amphipleura pellucida Kützing – freshwater; periphyton (Dressler, 2003).

Genus Amphiprora C. G. Ehrenberg

  • Amphiprora alata Kützing – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970).

Genus Frustulia Rabenhorst

  • Frustulia rhomboides (Ehrenberg) De Toni var. rhomboides – marine. littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970; in addition: F. rhomboides var. saxonica (Rabenhorst) De Toni – littoral, sporadic finding in the Rugozerskaya Bay). Freshwater; periphyton (Dressler, 2003).

Genus Halamphora (Cleve) Mereschkowsky

  • Halamphora subholsatica (Krammer) Levkov - marine, brackish; in the plankton of meromictic lake Trekhtzvetnoe. (Mindolina, 2025).

Family Berkeleyaceae D.G. Mann

Genus Berkeleya Greville

  • Berkeleya rutilans (Trentepohl) Cleve – marine, littoral; benthic, periphyton; everywhere, in some areas dominant (Бондарчук, 1970: as Amphipleura rutilans (Roth) Cleve; in addition, A. rutilans var. antarctica (Harvey) Cleve – rare, together with type variation). Marine, littoral, sublittoral, down to 5 m; benthic (Бондарчук, 1980: as A. rutilans).
  • Berkeleya scopulorum (Brébisson ex Kützing) E. J. Cox – marine, littoral; everywhere, sometimes dominant (Бондарчук, 1970: as Navicula scopulorum Brébisson).

Family Brachysiraceae D.G. Mann

Genus Brachysira Kützing

  • Brachysira bacillifer (Maillard) Lange-Bertalot & Moser – freshwater; periphyton (Dressler, 2003).
  • Brachysira brebissonii R. Ross subsp. brebissonii – freshwater; periphyton (Dressler, 2003).
  • Brachysira styriaca (Grunow) R. Ross – freshwater; periphyton (Dressler, 2003).
  • Brachysira vitrea (Grunow) R. Ross – freshwater; periphyton (Dressler, 2003).
  • Brachysira zellensis (Grunov) Cleve – freshwater; periphyton (Dressler, 2003).

Family Cavinulaceae D.G. Mann

Genus Cavinula Mann & Stickle

  • Cavinula cocconeiformis (Gregory ex Greville) D. G. Mann & A. J. Stickle – marine, littoral; benthic, periphyton; sporadic (Бондарчук, 1970: as Navicula cocconeiformis Gregory ex Greville).
  • Cavinula jaernefeltii (Hustedt) D.G. Mann — marine, littoral (Сапожников, 1998: as Navicula jaernefeltii (Hustedt).
  • Cavinula lacustris (W. Gregory) D. G. Mann – marine, littoral, diluted areas; periphyton; rare (Бондарчук, 1970: as Navicula lacustris W. Gregory).
  • Cavinula pseudoscutiformis (Hustedt) D. G. Mann & A. J. Stickle – freshwater; periphyton (Dressler, 2003: as Navicula pseudoscutiformis Hustedt).

Family Cosmioneidaceae D. G. Mann

Genus Cosmioneis D. G. Mann & Stickle

  • Cosmioneis pusilla (W. Smith) D. G. Mann & A. J. Stickle – marine, littoral; benthic, periphyton; sporadic (Бондарчук, 1970: as Navicula pusilla W. Smith).

Family Diadesmidaceae D. G. Mann

Genus Diadesmis Kützing

  • Diadesmis perpusilla (Grunow) D. G. Mann – marine, littoral, diluted areas; benthic, periphyton; very rare (Бондарчук, 1970: as Navicula perpusilla Grunow).

Genus Luticola D. G. Mann in F. E. Round et al.

  • Luticola goeppertiana (Bleisch) D. G. Mann – marine, littoral; rare, everywhere (Бондарчук, 1970: as Navicula mutica f. goeppertiana Bleisch).
  • Luticola mutica (Kützing) D. G. Mann – marine, littoral; rare, everywhere (Бондарчук, 1970: as Navicula mutica Kützing).

Family Diploneidaceae D. G. Mann

Genus Diploneis Ehrenberg ex Cleve

  • Diploneis chersonensis (Grunov) Cleve – marine, littoral, sublittoral; benthic, periphyton; rare (Бондарчук, 1970; Сапожников, 1998).
  • Diploneis constricta (Grunow) Cleve – marine, littoral; benthic (Сабурова, 1995).
  • Diploneis didyma (Ehrenberg) Cleve – marine, littoral; benthic, periphyton; not rare (Бондарчук, 1970).
  • Diploneis domblittensis (Grunov) Cleve — marine, littoral (Сапожников, 1998).
  • Diploneis fusca (W. Gregory) Cleve – marine, littoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970).
  • Diploneis gemmatula (A. Grunow) P.T. Cleve — marine, littoral (Сапожников, 1998).
  • Diploneis incurvata (Gregory) Cleve – marine, littoral, sublittoral; benthic, periphyton; not rare (Бондарчук, 1970).
  • Diploneis interrupta (Kützing) Cleve – marine, littoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970). Marine; planktonic (Конопля, 1974). Marine, sublittoral, 5-10 m; silty-sandy soil; benthic; dominant (Бондарчук, 1980а).
  • Diploneis litoralis (Donkin) Cleve var. arctica P. T. Cleve – marine, littoral; periphyton; sporadic finding in the Rugozerskaya Bay. (Бондарчук, 1970).
    • Diploneis litoralis var. clathrata (Østrup) Cleve — marine, planktonic (Rat'kova, 2000).
  • Diploneis marginestriata Hustedt — marine, littoral (Сапожников, 1998).
  • Diploneis ovalis (Hilse) Cleve – marine, littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970). Freshwater; periphyton (Dressler, 2003).
  • Diploneis parma Cleve — marine, littoral (Сапожников, 1998).
  • Diploneis smithii (Brébisson) Cleve – marine, littoral; benthic, periphyton; not rare, everywhere (Бондарчук, 1970). Marine, littoral; benthic (Сабурова, 1995).
    • D. smithii var. pumila (Grunow) Hustedt – brackish, benthic, periphyton; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  • Diploneis splendida (Gregory) Cleve – marine, littoral; benthic, periphyton; not rare, everywhere (Бондарчук, 1970). Marine, sublittoral, 5-10 m; silty-sandy soil; benthic; dominant (Бондарчук, 1980а).
  • Diploneis subcincta (A. Schmidt) Cleve – marine, littoral; benthic, periphyton; not abundant (Бондарчук, 1970).
  • Diploneis vacillans (A. Schmidt) Cleve — marine, littoral (Сапожников, 1998).
  • Diploneis weissflogii (A. Schmidt) Cleve — marine, littoral (Сапожников, 1998).

Family Naviculaceae Kützing

Genus Caloneis P. Cleve

  • Caloneis amphisbaena (Bory) Cleve – marine, littoral, diluted areas; rare (Бондарчук, 1970).
    • C. amphisbaena f. amphisbaena – freshwater; periphyton (Dressler, 2003).
  • Caloneis bacillum (Grunov) Mereschkowsky – marine, littoral; benthic, periphyton; not rare, everywhere (Бондарчук, 1970).
  • Caloneis brevis (Gregory) Cleve var. brevis – marine, littoral; benthic, periphyton; everywhere, not rare, in some areas abundant (Бондарчук, 1970: as C. brevis Greg.; in addition: C. brevis var. vexans Grun. – rare, together with type variation).
  • Caloneis liber (W. Smith) Cleve var. liber – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970: C. liber W. Sm.; in addition: C. liber var. umbilicata (Grunow) Cleve – littoral, sporadic in the Rugozerskaya Bay.)
  • Caloneis linearis (Grunow) Boyer – marine, littoral; benthic, periphyton; sporadic (Бондарчук, 1970: C. liber var. linearis (Grunow) Cleve).
  • Caloneis silicula (Ehrenberg) Cleve var. silicula – marine, littoral; benthic, periphyton; everywhere, rare (Бондарчук, 1970; as C. silicula var. ventricosa (Ehrenberg) Cleve; in addition: C. silicula var. ventricosa (Ehrenberg) Cleve – together with type variation, less often). Freshwater; periphyton (Dressler, 2003).
  • Caloneis subsalina (Donkin) Hendey – marine, littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970: as C. amphisbaena var. subsalina (Donkin) Cleve). Marine, littoral; silty-sandy soil; benthic (Сабурова, 1995).
  • Caloneis tenuis (W. Gregory) Krammer – freshwater; periphyton (Dressler, 2003).
  • Caloneis westii (W. Smith) Hendey – marine, littoral; benthic, periphyton; everywhere, rare (Бондарчук, 1970: C. formosa (Gregory) Cleve).

Genus Haslea Simonsen

  • Haslea crucigera (W. Smith) Simonsen – marine, littoral; benthic, periphyton; rare (Бондарчук, 1970: as Navicula crucigera (W. Smith) Cleve).
  • Haslea frauenfeldii (Grunow) Simonsen – marine, littoral; benthic, periphyton; rare (Бондарчук, 1970: as Navicula frauenfeldii Husted).

Genus Navicula Bory de Saint-Vincent

  • Navicula abrupta (W. Gregory) Donkin – marine, littoral, sublittoral; benthic, periphyton; everywhere, not abundant (Бондарчук, 1970). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995).
  • Navicula algida Grunow – marine, littoral; sporadic (Бондарчук, 1970).
  • Navicula ammophila Grunow var. ammophila – marine, littoral, sublittoral; benthic, periphyton; not rare, in some areas abundant (Бондарчук, 1970; as N. ammophila var. intermedia Grunow – not rare, in some areas abundant; Сапожников, 1998).
  • Navicula antonii Lange-Bertalot, 2000. Freswater. Found in semi-isolated coastal stratified lake Kislo-Sladkoe (Mindolina et al., 2023).
  • Navicula bottnica Grunow – marine, littoral; rare (Бондарчук, 1970).
  • Navicula cancellata Donkin var. cancellata – marine, littoral; sporadic (Бондарчук, 1970; N. cancellata var. gregorii Grunow – sporadic; N. cancellata var. retusa (de Brébisson) Cleve – sporadic).
  • Navicula capitata Ehrenberg – marine, littoral, diluted areas; benthic, periphyton; very rare (Бондарчук, 1970: as N. hungarica Grunow, N. hungarica var. capitata (Ehrenberg) Cleve и N. hungarica var. luneburgensis Grunow).
  • Navicula capitatoradiata Germain – freshwater; periphyton (Dressler, 2003).
  • Navicula cincta (Ehrenberg) Kützing – marine, littoral, Rugozerskaya Bay; rare (Бондарчук, 1970).
  • Navicula clementis Grunow var. clementis – marine, littoral, sublittoral; benthic, periphyton; rare (Бондарчук, 1970; as N. clementis var. acuta Brock – sporadic, together with type variation).
  • Navicula complanata (Grunow) Grunow – marine, littoral, sublittoral; periphyton; not rare (Бондарчук, 1970: N. complanata Hust.).
  • Navicula crucicula (W. Smith) Donkin – marine, littoral; sporadic (Бондарчук, 1970).
  • Navicula crucigeroides Hustedt – marine, littoral; rare (Бондарчук, 1970).
  • Navicula cryptocephala Kützing – marine, littoral; benthic, periphyton; everywhere, not abundant (Бондарчук, 1970). Marine, littoral; silty-sandy soil; dominant (Сабурова, 1995). Freshwater; periphyton (Dressler, 2003).
  • Navicula cryptocephala var. intermedia Grunow — marine, common, littoral (Сапожников, 1998).
  • Navicula cryptotenella Lange-Bertalot – freshwater; periphyton (Dressler, 2003).
  • Navicula crystallina Hustedt – marine, littoral; rare (Бондарчук, 1970).
  • Navicula dahurica Skvortzov — marine, littoral (Сапожников, 1998).
  • Navicula debilissima Grunow – marine, littoral; silty-sandy soil; benthic (Сабурова, 1995).
  • Navicula digitoradiata (Gregory) Schmidt var. digitoradiata – marine, littoral, diluted areas; in some areas abundant (Бондарчук, 1970; N. digitoradiata var. seychellensis Cleve – together with type variation, sporadic; **N. digitoradiata var. cyprinus (Ehrenberg) W. Smith – together with type variation, sometimes dominant). Marine, littoral, corner of the Rugozerskaya Bay; silty soil; dominant (Бондарчук, 1980а). marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995).
  • Navicula directa (W. Smith) Ralfs var. directa – marine, littoral; benthic, periphyton; everywhere, in some areas abundant (Бондарчук, 1970; as N. directa var. incus (Grunow in A. Schmidt) Cleve – littoral, Rugozerskaya Bay, sporadic findings; N. directa var. remota (Grunow) Cleve – benthic, periphyton; sporadic). Marine; littoral species in plankton; spring (Конопля, 1971). Marine; planktonic; common in spring (Конопля, 1974).
  • Navicula dissipata Hustedt – marine, littoral; sporadic (Бондарчук, 1970).
  • Navicula distans (W. Smith) Ralfs – marine, littoral; sporadic (Бондарчук, 1970: as N. distans W. Sm.).
  • Navicula elegans W. Smith – marine, littoral; sporadic (Бондарчук, 1970).
  • Navicula elginensis (Gregory) Ralfs var. elginensis – freshwater; periphyton (Dressler, 2003).
  • Navicula finmarchica (Cleve & Grunow) Cleve – marine, littoral, sublittoral; benthic, periphyton; rare (Бондарчук, 1970: as N. finmarchica Cl. & Grun.).
  • Navicula fraudulenta A. Schmidt – marine littoral, Rugozerskaya Bay; sporadic finding (Бондарчук, 1970).
  • Navicula frigida Grunow — planktonic, dominant in spring, Velikaya Salma (Конопля, 1971).
  • Navicula gastrum (Ehrenberg) Kützing var. gastrum – marine, littoral, diluted areas; rare (Бондарчук, 1970; N. gastrum var. latiuscula Grunow – Rugozerskaya Bay, sporadic findings). Freshwater; перифит (Dressler, 2003).
  • Navicula gelida Grunow var. gelida – marine, littoral, sublittoral; benthic, periphyton; rare (Бондарчук, 1970; N. gelida var. subimpressa (Grunow) Cleve – periphyton; sporadic finding in the Rugozerskaya Bay; N. gelida var. tenuis Cleve – sporadic on littoral in the Rugozerskaya Bay.). Marine; littoral species in plankton; common in spring (Конопля, 1971, 1974).
  • Navicula glacialis (Cleve) Cleve var. glacialis – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970; N. glacialis var. septentrionalis Cleve – very rare, together with type variation). Marine; in plankton (Конопля, 1974).
  • Navicula gothlandica Grunow – marine, littoral, Rugozerskaya Bay; sporadic finding (Бондарчук, 1970).
  • Navicula granii (Jørgensen) Gran – marine, planktonic (Конопля, 1974).
  • Navicula gregaria Donkin – marine, littoral; rare, everywhere (Бондарчук, 1970). Also in semi-isolated coastal stratified lake Kislo-Sladkoe (Mindolina et al., 2023); in plankt. of meromictic lake Trekhtzvetnoe (Mindolina, 2025; Ivanova, 2025, personal communication).
  • Navicula grevilleana Hendey – marine, littoral; benthic, periphyton; often (Бондарчук, 1970: N. grevillei Ag.; in addition: N. grevillei var. minir (Ag.) A. Cl. – not rare, in diluted areas).
  • Navicula halophila (Grunow ex Van Heurck) Cleve – marine, littoral; silty-sandy soil; benthic (Сабурова, 1995).
  • Navicula hamulifera Grunow – marine, littoral; sporadic (Бондарчук, 1970).
  • Navicula incerta Grunow — marine, common, littoral (Сапожников, 1998).
  • Navicula kepesii Grunow — marine, common, littoral (Сапожников, 1998).
  • Navicula kariana Cleve var. frigida (Grunow) Cleve – marine, littoral, sublittoral; benthic, periphyton; not rare (Бондарчук, 1970).
  • Navicula krasskei Hustedt – marine, littoral; silty-sandy soil; benthic (Сабурова, 1995).
  • Navicula lanceolata (C. Agardh) Kützing var. lanceolata – marine, littoral; sporadic, everywhere (Бондарчук, 1970; in addition: N. lanceolata var. cymbula (Donkin) Cleve – sporadic finding on the littoral in the Rugozerskaya Bay; N. lanceolata var. tenella Cleve – very rare on the littoral of the Rugozerskaya Bay).
    • N. lanceolata var. phyllepta (Kützing) Cleve – freshwater; periphyton (Dressler, 2003: as N. phyllepta Kützing).
  • Navicula latens Krasske — marine, littoral (Сапожников, 1998).
  • Navicula lateropunctata J. H. Wallace — marine, common, littoral (Сапожников, 1998).
  • Navicula laterostrata Hustedt — marine, littoral (Сапожников, 1998).
  • Navicula lineola Grunow – marine, littoral; sporadic (Бондарчук, 1970).
  • Navicula menisculus Schumann – marine, littoral; rare, everywhere (Бондарчук, 1970).
  • Navicula menisculus var. usaliensis Grunow — periphyton, bogs, lakes (Dressler, Hübener, 2002).
  • Navicula minuscula Grunow — marine, littoral (Сапожников, 1998).
  • Navicula monilifera var. heterosticha Cleve — marine, littoral (Сапожников, 1998).
  • Navicula oblonga (Kützing) Kützing — planktonic, rare, diluted Velikaya Salma (Бондарчук, 1963).
  • Navicula palpebralis de Brébisson – marine, littoral, sublittoral; rare (Бондарчук, 1970; N. palpebralis var. angulosa (Gregory) Van Heurck – together with type variation; N. palpebralis var. minor (Gregory) Grunow – together with type variation, less often; N. palpebralis var. semiplena (Gregory) Cleve – very rare on the littoral).
  • Navicula paradoxa Skvortzov — marine, common, littoral (Сапожников, 1998).
  • Navicula paucivisitata R. M. Patrick — marine, littoral (Сапожников, 1998).
  • Navicula pelagica Cleve – marine; planktonic; dominant in spring (Конопля, 1971). Marine; planktonic; common in spring (Конопля, 1974).
  • Navicula pelliculosa (Brébisson ex Kützing) Hilse — marine, littoral (Сапожников, 1998).
  • Navicula peregrina (Ehrenberg) Kützing – marine, littoral; rare, everywhere (Бондарчук, 1970; N. peregrina var. intermedia D. McCall – rare, in diluted littoral areas; N. peregrina var. lanceolata Skvortzov – very rare, in diluted littoral areas; N. peregrina var. peregrinoides D. McCall – littoral Rugozerskaya Bay, sporadic finding).
  • Navicula perminuta Grunow – freshwater, marine and brackish; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  • Navicula placentula (Ehrenberg) Grunow – marine, littoral, mouths of brooks; rare (Бондарчук, 1970: as N. placentula Ehr.).
  • Navicula plicata Donkin – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970).
  • Navicula protracta Grunow – marine, littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970; N. protracta f. conspicua Korotkevich – together with type variation, rare).
  • Navicula radiosa Kützing – marine, littoral, diluted areas; sporadic (Бондарчук, 1970; as N. radiosa var. acuta (W. Smith) Grunov – sporadic in the Rugozerskaya Bay; N. radiosa var. tenella (Brébisson) Van Heurck – sporadic in the Rugozerskaya Bay). Freshwater; periphyton (Dressler, 2003). In the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025; Ivanova, 2025, personal communication).
  • Navicula ramosissima (C. Agardh) Cleve – marine, littoral, sublittoral; benthic, periphyton; sometimes abundant (Бондарчук, 1970: N. ramosissima Ag.; N. ramosissima var. amplia Grunow – very rare, together with type variation).
  • Navicula reichardtii Grunow – marine, littoral, sublittoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970; as N. reichardtii var. tschutchschorum (Cleve) Cleve – together with type variation, not rare).
  • Navicula rhynchocephala Kützing – marine, littoral; sporadic, everywhere (Бондарчук, 1970; as N. rhynchocephala var. amphiceros (Kützing) Grunow – everywhere, not abundant). Freshwater; periphyton (Dressler, 2003); in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  • Navicula rostellata Kützing – marine, littoral; sporadic, everywhere (Бондарчук, 1970; N. rostellata var. major Kützing – sporadic finding in the Rugozerskaya Bay; N. rostellata var. minor Van Heurck – sporadic, together with type variation). Freshwater; periphyton (Dressler, 2003).
  • Navicula salinarum Grunow – marine, littoral; benthic, periphyton; in some areas dominant (Бондарчук, 1970). Littoral, corner of the Rugozerskaya Bay, diluted areas; silty soil; dominant (Бондарчук, 1980а). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995).
  • Navicula scutelloides W. Smith – marine, littoral, Rugozerskaya Bay; sporadic finding (Бондарчук, 1970).
  • Navicula secura R. M. Patrick — marine, common, littoral (Сапожников, 1998).
  • Navicula septentrionalis (Grunow) Gran – marine; planktonic; dominant, dominant in spring (Конопля, 1971, 1974).
  • Navicula simplex Krasske — marine, dominant, littoral (Сапожников, 1998).
  • Navicula simula Patrick — marine, littoral (Сапожников, 1998).
  • Navicula spicula (Dickie) Cleve – marine, littoral; sporadic, everywhere (Бондарчук, 1970). Marine; in plankton (Конопля, 1971, 1974).
  • Navicula subrhombica Hustedt — marine, common, littoral (Сапожников, 1998).
  • Navicula subtilissima Cleve – freshwater; periphyton (Dressler, 2003).
  • Navicula transitans Cleve – marine, littoral, Rugozerskaya Bay; benthic, periphyton; sporadic (Бондарчук, 1970; N. transitans var. asymmetrica (Cleve) Cleve – sporadic finding in fouling; N. transitans var. derasa (Grunow) Cleve – sporadic; N. transitans var. derasa f. minuta (Cleve) Cleve – sporadic finding).
  • Navicula tripunctata (O.F. Müller) Bory – marine, littoral; sporadic (Бондарчук, 1970: as N. gracilis Ehrenberg). Marine, littoral; silty-sandy soil; benthic (Сабурова, 1995: as N. gracilis). Freshwater; periphyton (Dressler, 2003).
  • Navicula unipunctata Skvortzov — marine, littoral (Сапожников, 1998).
  • Navicula upsaliensis Grunow – freshwater; periphyton (Dressler, 2003).
  • Navicula vanhoeffenii Gran – marine; planktonic; dominant in spring (Конопля, 1971, 1974).
  • Navicula veneta Kützing – marine, littoral; sporadic, together with N. cryptocephala (Бондарчук, 1970: N. cryptocephala var. veneta (Kützing) Rabenhorst). In plankt. of meromictic lake Trekhtzventnoe (Mindolina, 2025).
  • Navicula verecunda Hustedt — marine, littoral (Сапожников, 1998).
  • Navicula viridula (Kützing) Kützing – marine, littoral, mouths of brooks; benthic, periphyton; rare (Бондарчук, 1970; as N. viridula var. avenacea (Brébisson) Grunow – rare, together with type variation). Freshwater; periphyton (Dressler, 2003).
  • Navicula vulpina Kützing – marine, littoral, diluted areas; rare (Бондарчук, 1970).
  • Navicula wildii Lange-Bertalot – freshwater; periphyton (Dressler, 2003).

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

  • Pseudogomphonema kamtschaticum (Grunow) L. K. Medlin – marine, littoral; benthic, periphyton; not rare, everywhere (Бондарчук, 1970: as Gomphonema kamtschaticum Grunow).

Genus Trachyneis Cleve

  • Trachyneis aspera (Ehrenberg) Cleve – marine, littoral, sublittoral; benthic, periphyton; everywhere, rare (Бондарчук, 1970; as T. aspera var. intermedia (Grunov) Cleve – rare, everywhere; T. aspera var. pulchella (W. Smith) Cleve – sporadic, together with type variation; T. aspera var. vulgaris Cleve – rare, everywhere). Marine, sublittoral, 5-10 м; silty-sandy soil; dominant (Бондарчук, 1980а). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995).

Family Neidiaceae Mereschkowsky

Genus Neidium Pfitzer

  • Neidium affine (Ehrenberg) Pfizer – marine, littoral; diluted areas; rare (Бондарчук, 1970: as N. affine (Ehrenberg) Cleve).
  • Neidium ampliatum (Ehrenberg) Krammer – freshwater; periphyton (Dressler, 2003); in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  • Neidium bisulcatum (Lagerstedt) Cleve – freshwater; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  • Neidium dubium (Ehrenberg) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970: as N. dubium Ehenberg).
  • Neidium globiceps (A. Cleve) A. Cleve – marine, littoral, Rugozerskaya Bay; sporadic finding in the mouth of a brook (Бондарчук, 1970: as N. globiceps A. Cleve).

Family Pinnulariaceae D. G. Mann

Genus Mayamaea Lange-Bert.

  • Mayamaea disjuncta (Hustedt) J.Y. Li & Y.Z.Qi 2018 – freshwater; in plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).

Genus Pinnularia Ehrenberg

  • Pinnularia abaujensis (Pantocsek) R. Ross var. linearis (Hustedt) R.M. Patrick – freshwater; periphyton (Dressler, 2003: as P. gibba var. linearis Hustedt).
  • Pinnularia ambigua Cleve – marine, littoral; sporadic, everywhere (Бондарчук, 1970).
  • Pinnularia biceps W. Gregory – freshwater; periphyton (Dressler, 2003).
  • Pinnularia borealis Ehrenberg – marine, littoral; sporadic (Бондарчук, 1970).
  • Pinnularia cruciformis (Donkin) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970). Marine; in plankton (Конопля, 1974).
  • Pinnularia fasciata Lagerstedt - marine, littoral (Сапожников, 1998).
  • Pinnularia gibba (Ehrenberg) Ehrenberg var. gibba – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998).
  • Pinnularia gibbiformis K. Krammer – freshwater; periphyton (Dressler, 2003).
  • Pinnularia globiceps W. Gregory – marine, littoral, significantly diluted areas; sporadic (Бондарчук, 1970).
  • Pinnularia hemiptera (Kützing) Cleve – marine, littoral; Rugozerskaya Bay; sporadic finding (Бондарчук, 1970).
  • Pinnularia interrupta W. Smith – marine, littoral; sporadic (Бондарчук, 1970). Freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
  • Pinnularia major (Kützing) Cleve — planktonic, rare, diluted Velikaya Salma (Бондарчук, 1963); planktonic, benthic, common, brackish-water, freshwater, Kindo peninsula.
  • Pinnularia mesolepta (Ehrenberg) W. Smith – marine, littoral; sporadic (Бондарчук, 1970).
  • Pinnularia neomajor Krammer – freshwater; periphyton (Dressler, 2003).
  • Pinnularia pseudogibba K. Krammer var. pseudogibba – freshwater; periphyton (Dressler, 2003).
  • Pinnularia quadratarea (A. Schmidt) Cleve – marine, littoral; not rare, everywhere (Бондарчук, 1970; P. quadratarea var. baltica (A. Grunow) P. T. Cleve – together with type variation; P. quadratarea var. minor (E. V. Østrup) H. Heiden (P. quadratarea var. minor Grun.) – rare, together with type variation; P. quadratarea var. Soderlundii Cleve – rare, together with type variation). Marine, in plankton (Конопля, 1974). Littoral, corner of the Rugozerskaya Bay; silty soil; dominant (Бондарчук, 1980а).
  • Pinnularia stauroptera (Grunov) Rabenhorst – marine, littoral, significantly diluted areas; sporadic (Бондарчук, 1970: P. stauroptera Grun.).
  • Pinnularia stomatophora Grunow – marine, littoral, Rugozerskaya Bay; sporadic finding in the mouth of a brook (Бондарчук, 1970). Freshwater; periphyton (Dressler, 2003: P. cf. stomatophora).
  • Pinnularia subcapitata W. Gregory – freshwater; periphyton (Dressler, 2003).
  • Pinnularia subgibba Krammer – freshwater; periphyton (Dressler, 2003).
  • Pinnularia viridis (Nitzsch) Ehrenberg – marine, littoral; sporadic, everywhere (Бондарчук, 1970; P. viridis var. commutata (Grunow) Cleve – sporadic finding in the Rugozerskaya Bay; P. viridis var. leptogongyla (Ehrenberg) Grunow – sporadic finding in the Rugozerskaya Bay; P. viridis var. sudetica (Hilse) Husted – sporadic, everywhere). freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).

Family Plagiotropidaceae D.G. Mann

Genus Tropidoneis Cleve

  • Tropidoneis lepidoptera (Gregory) Cleve var. lepidoptera – marine, littoral; sporadic, everywhere (Бондарчук, 1970: T. lepidoptera (Gregory) Cleve). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995). Marine, littoral, estuary of the Chernaya River; benthic; common (Azovsky et al., 2004).
  • Tropidoneis vitrea (W. Smith) Cleve – marine, littoral; sporadic, everywhere (Бондарчук, 1970: T. vitrea W. Sm.).

Family Pleurosigmataceae Mereschkowsky

Genus Gyrosigma Hassall

  • Gyrosigma acuminatum (Kützing) Rabenhorst – marine, littoral, sublittoral; benthic, periphyton; everywhere, not abundant (Бондарчук, 1970; as G. acuminatum var. gallica Grunow – together with type variation, less often). Freshwater; periphyton (Dressler, 2003).
  • Gyrosigma arcticum (Cleve) Cleve – marine, littoral, sublittoral; benthic, periphyton; everywhere, not abundant (Бондарчук, 1970). Marine; in plankton (Конопля, 1974).
  • Gyrosigma attenuatum (Kützing) Rabenhorst – marine, littoral, diluted areas; benthic, periphyton; rare (Бондарчук, 1970).
  • Gyrosigma balticum (Ehrenberg) Rabenhorst – marine, littoral, diluted areas; in some areas abundant (Бондарчук, 1970).
  • Gyrosigma compactum (Greville) Cleve – marine, littoral; benthic, periphyton; rare (Бондарчук, 1970).
  • Gyrosigma distortum (W. Smith) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970:as G. distortum W. Sm.).
  • Gyrosigma fasciola (Ehrenberg) J. W. Griffith & Henfrey – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970; G. fasciola var. prolongatum (W. Smith) Cleve (G. fasciola var. prolongatum W. Sm.) – together with type variation). Marine, littoral; silty-sandy soil; benthic; (Сабурова, 1995).
  • Gyrosigma kuetzingii (Grunow) Cleve – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970).
  • Gyrosigma littorale (W. Smith) Griffith & Henfrey – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970: G. littorale W. Sm.).
  • Gyrosigma macrum (W. Smith) Cleve – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1963, 1970).
  • Gyrosigma obscurum (Smith) Griffith & Henfrey - freshwater, brackish; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025; Ivanova, 2025, personal communication).
*Gyrosigma prolongatum (W. Smith) J. W. Griffith & Henfrey var. closterioides (Grunow) Cleve – sporadic finding on the sublittoral, 10 m, near the Velichaikha island (Бондарчук, 1970).
  • Gyrosigma rectum (Donkin) Cleve – marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995). Marine, littoral, estuary of the Chernaya River; benthic; common (Azovsky et al., 2004: Donkinia recta (Donkin) Grunow).
  • Gyrosigma scalproides (Rabenhorst) Cleve – marine, littoral, diluted areas; sporadic (Бондарчук, 1970).
  • Gyrosigma spenceri (W. Smith) Griffith & Henfrey – marine, littoral; benthic, periphyton; often in diluted areas (Бондарчук, 1970: G. spenceri (W. Sm.) Cl.).
  • Gyrosigma strigile (W. Smith) Cleve — marine, littoral (Сапожников, 1998); epiphyte on macrophytic algae, common, littoral, sublittoral, Velikaya Salma
  • Gyrosigma tenuissimum (W. Smith) Griffith & Henfrey – marine, littoral; sporadic (Бондарчук, 1970; G. tenuissimum var. hyperborea Grun. – sporadic). Marine; in plankton (Конопля, 1974).
  • Gyrosigma wansbeckii (Donkin) Cleve – marine, littoral; benthic, periphyton; in some areas abundant (Бондарчук, 1970).

Genus Pleurosigma W. Smith

  • Pleurosigma aestuarii (Brébisson ex Kützing) W. Smith – marine, littoral, diluted areas; in some areas abundant (Бондарчук, 1970). Marine, littoral; silty-sandy soil; benthic; dominant (Сабурова, 1995).
  • Pleurosigma angulatum (Queckett) W. Smith – marine, littoral; not rare, everywhere (Бондарчук, 1970). Marine; in plankton (Конопля, 1974). Freshwater; periphyton (Dressler, 2003).
  • Pleurosigma elongatum W. Smith – marine, littoral, sublittoral; benthic, periphyton; everywhere, in some areas dominant (Бондарчук, 1970; as P. elongatum var. fallax Grun. – rare, together with type variation; P. elongatum var. kariana Grun. – rare, together with type variation). Marine; in plankton (Конопля, 1974). Marine, littoral, corner of the Rugozerskaya Bay; silty soil; dominant (Бондарчук, 1980а).
  • Pleurosigma finnmarchicum Grunow – marine, littoral; not rare, together with P. angulatum (Бондарчук, 1970: P. angulatum var. finmarchicum (Grunow) Cleve).
  • Pleurosigma intermedium W. Smith – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970; as P. intermedium, P. nubecula W. Smith, P. nubecula var. intermedium (W. Smith) Cleve).
  • Pleurosigma longum Cleve – marine, littoral; benthic, periphyton; sporadic, everywhere (Бондарчук, 1970).
  • Pleurosigma normanii Ralfs – marine, littoral, sublittoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970).
  • Pleurosigma salinarum (Grunow) Grunow – marine, littoral, Rugozerskaya Bay; rare (Бондарчук, 1970).
  • Pleurosigma strigosum W. Smith – marine, littoral; rare, together with P. angulatum (Бондарчук, 1970: P. angulatum var. strigosum (W. Smith) Van Heurck).
  • Pleurosigma stuxbergii Cleve & Grunow — planktonic, rare, summer, Velikaya Salma (Бондарчук, 1963).
  • Pleurosigma subrigidum Grunow – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970).

Family Scoliotropidaceae Mereschkowsky

Genus Scoliopleura Grunow

  • Scoliopleura tumida (Brébisson ex Kützing) Rabenhorst – marine, littoral; rare, everywhere (Бондарчук, 1970: as S. tumida Bréb.)

Genus Scoliotropis Cleve

  • Scoliotropis latestriata (Brébisson ex Kützing) Cleve – marine, littoral; rare (Бондарчук, 1970; Сапожников, 1998).

Family Sellaphoraceae Mereschkowsky

Genus Fallacia Stickle & Mann

  • Fallacia cf. cryptolyra (Brockmann) Stickle & Mann - freshwater; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  • Fallacia forcipata (Greville) Stickle & Mann (=Navicula forcipata Greville) – marine, littoral; benthic, periphyton; everywhere, sometimes abundant (Бондарчук, 1970; N. forcipata var. densestriata A.W.F. Schmidt – everywhere, sometimes abundant; N. forcipata var. versicolor Grunow – sporadic finding in the Rugozerskaya Bay). Marine; in plankton (Конопля, 1971; Конопля, 1974). Marine, littoral, corner of the Rugozerskaya Bay, diluted areas; silty soil (Бондарчук, 1980а).
  • Fallacia hyalinula (De Toni) Stickle & Mann – marine, littoral, sublittoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970: Navicula cf. plathi Brockmann).
  • Fallacia litoricola (Hustedt) D. G. Mann – marine, littoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970: Navicula litoricola Hustedt).
  • Fallacia pygmaea (Kützing) A. J. Stickle & D. G. Mann – marine, littoral; benthic, periphyton; rare, everywhere (Бондарчук, 1970: Navicula pygmaea Kützing). In the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  • Fallacia subforcipata (Hustedt) Mann – marine, littoral, Rugozerskaya Bay; sporadic (Бондарчук, 1970: Navicula subforcipata Hustedt).

Genus Sellaphora Mereschkovsky

  • Sellaphora bacillum (Ehrenberg) D. G. Mann – marine, littoral; benthic; everywhere, sometimes abundant (Бондарчук, 1970: Navicula bacillum Ehrenberg).
  • Sellaphora laevissima (Kützing) D.G.Mann – freshwater; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  • Sellaphora pupula (Kützing) Mereschkovsky – marine, littoral, diluted areas; benthic; rare (Бондарчук, 1970: Navicula pupula Kützing; N. pupula var. capitata Hustedt – sporadic, together with type variation; N. pupula var. elliptica Hustedt – sporadic finding in the Rugozerskaya Bay). Marine, littoral; silty-sandy soil; benthic (Сабурова, 1995: N. pupula var. rostrata (Hustedt) J.R. Johansen). Freshwater; periphyton (Dressler, 2003: N. pupula var. pupula). In the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).
  • Sellaphora saugerresii (Desmazières) Wetzel & Mann - Marine; freshwater. In the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).

Family Stauroneidaceae D.G. Mann

Genus Craticula Grunow

  • Craticula ambigua (Ehrenberg) D. G. Mann – freshwater; periphyton (Dressler, Hübener, 2002; Dressler, 2003).

Genus Stauroneis Ehrenberg

  • Stauroneis acuta W. Smith — planktonic, common, Vodoprovodnoye (Potable water) Lake.
  • Stauroneis anceps Ehrenberg – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
  • Stauroneis phoenicenteron Ehrenberg – marine, littoral, diluted areas; benthic; rare (Бондарчук, 1970). Freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Freshwater; periphyton (Dressler, 2003).
  • Stauroneis prominula (Grunov) Hustedt – marine, littoral, Rugozerskaya Bay; sporadic finding (Бондарчук, 1970: S. parvula var. prominula Grunow ex Cleve).
  • Stauroneis salina W. Smith – marine, littoral; benthic; everywhere, sometimes abundant (Бондарчук, 1970).
  • Stauroneis smithii Grunow var. incisa Pantoczek — marine, littoral (Сапожников, 1998).

Incertae sedis

Genus Mayamaea Lange-Bert.

  • Mayamaea disjuncta (Hustedt) J.Y. Li & Y.Z.Qi 2018 – freshwater; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).

rus: Порядок Naviculales

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