Order Chlorococcales
Family Botryococcaceae Wille
Genus Dictyosphaerium Nägeli
- Dictyosphaerium ehrenbergianum Nägeli – planktonic; Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake, Verkhneye Ershovskoe lake; rare (own data).
- Dictyosphaerium pulchellum Wood – planktonic; freshwater; common (own data).
Family Characiaceae (Nägeli) Wittrock
Genus Characium A. Braun in Kützing
- Characium acuminatum A. Braun ex Kützing – on filamentous algae; Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; common (own data).
- Characium conicum Korschikov – on filamentous algae; Verkhneye (Upper) Lake; rare (own data).
Family Chlorochytriaceae
Genus Chlorochytrium Cohn
- Chlorochytrium cohnii E. P. Wright – endophyte in Сeramium; Eremeevsky porog rapids; sporadic; Kylinia; littoral, sublittoral; Velikaya Salma; rare; Polysiphonia; littoral, sublittoral; common; Enteromorpha; littoral; rare (own data: Chlorocystis cohnii (Wright) Reinhard). This species needs clarification of nomenclature and ecological characteristics (Михайлова, 2010).
- Chlorochytrium inclusum Kjellman – endophyte in Callymenia; Malyi Eremeevsky Island; sporadic; Phyllophora; Biofiltry Bay; sporadic (own data). The stage Chlorochytrium inclusum Kjellman – is a sporophyte, and the stage Spongomorpha aeruginosa (Linnaeus) Hoek is a gametophyte) (Михайлова, 2010).
- Chlorochytrium porphyrae Setchell & Gardner – endophyte in Porphyra; Malyi Eremeevsky Island; sporadic (own data). This species needs clarification of nomenclature and ecological characteristics (Михайлова, 2010).
Family Chlorococcaceae Blackman & Tansley
Genus Chlorococcum Fries
- Chlorococcum botryoides (Kützing) Rabenhorst – epiphyte; freshwater; common (own data).
- Chlorococcum infusionum (Schrank) Meneghini – benthic, planktonic; freshwater, brackish-water; common (own data: Chlorococcum infusionum, Hypnomonas chlorococcoides Korschikov and Cystococcus humicola Nägeli).
- Chlorococcum olivaceum (Rabenhorst) Rabenhorst – on stones, wood in the water; freshwater; common (own data).
Genus Coccomyxa Schmidle
- Coccomyxa arvensis Jaag — planktonic, rare, freshwater supralittoral basin, Kindo peninsula.
- Coccomyxa confluens (Kützing) Fott – periphyton; Vodoprovodnoye (Potable water) Lake; sporadic (own data: Coccomyxa dispar Schmidle).
Family Chlorosarcinaceae
Genus Chlorosarcinopsis Herndon
- Chlorosarcinopsis minor (Gerneck) Herndon – planktonic; freshwater supralittoral, rainwater basins, лужи; common (own data).
Family Dictyosphaeriaceae G.S. West
Genus Dictyosphaerium Nägeli
- Dictyosphaerium ehrenbergianum Nägeli – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998).
Family Golenkiniaceae (Korshikov) Komárek
Genus Golenkinia Chodat
- Golenkinia radiata Chodat – planktonic; lakes; common (own data).
Family Hydrodictyaceae Dumortier
Genus Pediastrum Meyen
- Pediastrum boryanum (Turpin) Meneghini – marine; planktonic; incidental species (Конопля, 1974). Freshwater, Verkhneye (Upper) Lake; planktonic (Бизина, 1998). Planktonic; freshwater, brackish-water supralittoral basins; rare (own data).
- Pediastrum duplex Meyen – freshwater, Verkhneye (Upper) Lake; planktonic (Бизина, 1998). Freshwater, brackish-water supralittoral basins, pools, rare; Verkhneye (Upper) Lake, Verkhneye and Nizhneye Ershovskoe lakes; common (own data).
Genus Hyaloraphidium Pascher & Korshikov
- Hyaloraphidium contortum Pascher & Korshikov – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998).
Genus Treubaria C. Bernard
- Treubaria schmidlei (Schröder) Fott & Kovácik – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998).
Family Micractiniaceae G. M. Smith
Genus Golenkiniopsis Korschikov
- Golenkiniopsis minutissima (Iyengar & Balakrishnan) Starr – planktonic; lakes; rare (own data).
Genus Micractinium Fresenius
- Micractinium pusillum Fresenius – planktonic; lakes; rare (own data).
Family Oocystaceae Bohlin
Genus Chodatella Lemmermann
- Chodatella subsalsa Lemmermann – planktonic; lakes; common (own data).
Genus Kirchneriella Schmidle
- Kirchneriella subcapitata Korschikov – planktonic; Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; rare (own data).
- Kirchneriella lunaris (Kirchner) Moebius – planktonic; freshwater, brackish-water basins, pools; common (own data).
Genus Lagerheimia R. Chodat
- Lagerheimia genevensis (Chodat) Chodat – planktonic; lakes; rare (own data: Chodatella quadriseta Lemmermann).
- Lagerheimia longiseta (Lemmermann) Wille – planktonic; lakes; common (own data: Chodatella longiseta Lemmermann).
- Lagerheimia minor Fott – planktonic; freshwater supralittoral basins, lakes; common (own data).
Genus Muriella J. B.Petersen
- Muriella decolor Vischer – planktonic; freshwater supralittoral basins, pools; rare (own data).
Genus Oocystis Nägeli
- Oocystis borgei Snow – planktonic; freshwater, brackish-water basins, pools; common (own data).
- Oocystis solitaria Wittrock – planktonic, periphyton; freshwater, brackish-water basins, pools; common (own data).
- Oocystis submarina Lagerheim – planktonic, periphyton; freshwater, brackish-water basins, pools, brooks; from rare to often (own data).
Genus Selenastrum Reinsch
- Selenastrum bibraianum Reinsch – planktonic; freshwater; common, sometimes dominant (own data).
Genus Trochiscia Kützing
- Trochiscia aspera (Reinsch) Hansgirg – planktonic; freshwater, brackish-water supralittoral basins, pools, lakes; rare (own data).
- Trochiscia clevei Lemmermann – marine, planktonic (own data).
- Trochiscia multispinosa (Moebius) Lemmermann – marine, planktonic (own data).
- Trochiscia reticularis (Reinsch) Hansgirg 1888 – planktonic; Verkhneye Ershovskoe lake; rare (own data).
Family Radiococcaceae Fott ex P. C. Silva
Genus Coenococcus Korshikov
- Coenococcus polycoccus (Korshikov) Hindák – planktonic; Verkhneye (Upper) Lake; rare (own data: Sphaerocystis polycocca Korschikov).
Genus Coenocystis Korschikov
- Coenocystis planctonica Korschikov – planktonic; freshwater supralittoral basin; Cape Kindo; sporadic (own data).
Family Scenedesmасеае Oltmanns
Genus Actinastrum Lagerheim
- Actinastrum hantzschii Lagerheim – planktonic; lakes; rare (own data).
Genus Coelastrum Nägeli
- Coelastrum astroideum De Notaris – planktonic; Vodoprovodnoye (Potable water) Lake ; rare (own data).
- Coelastrum microporum Nägeli – planktonic; lakes; common (own data).
- Coelastrum sphaericum Nägeli – planktonic; lakes; common (own data).
Genus Crucigenia Morren
- Crucigenia fenestrata Schmidle – planktonic; freshwater supralittoral basins, Verkhneye (Upper) Lake; rare (own data).
- Crucigenia rectangularis (Nägeli) Gay – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Krugloe lake; sporadic (own data).
- Crucigenia tetrapedia (Kirchner) W. & G. S.West – planktonic; lakes; rare (own data).
Genus Scenedesmus Meyen
- Scenedesmus acuminatus (Lagerheim) Chodat – planktonic; freshwater, brackish-water supralittoral basins, pools, Verkhneye (Upper) Lake; common (own data).
- Scenedesmus acutiformis Schröder – planktonic; freshwater, bogs; common (own data).
- Scenedesmus apiculatus (W. West & G. S. West) Chodat – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998).
- Scenedesmus obliquus (Turpin) Kützing – planktonic; freshwater, brackish-water supralittoral basins, pools; rare (own data).
- Scenedesmus quadricauda (Turpin) Brébisson – freshwater, Verkhneye (Upper) Lake; planktonic (Бизина, 1998). Planktonic; freshwater, brackish-water supralittoral basins, pools, lakes; common (own data).
Genus Tetrastrum Chodat
- Tetrastrum staurogeniaeforme (Schröder) Lemmermann & Tiffany – planktonic; Verkhneye (Upper) Lake; sporadic (own data).
Genus Westella De Wildermann
- Westella botryoides (W. West) De Wildeman – planktonic; Vodoprovodnoye (Potable water) Lake , Verkhneye Ershovskoe lake; common (own data: Tetracoccus botryoides West).