Order Sphaeropleales

Family Ankistrodesmaceae Korshikov

Genus Ankistrodesmus Corda

• Ankistrodesmus falcatus (Corda) Ralfs – planktonic; lakes; common (own data).

Genus Hyaloraphidium Pascher & Korschikov

• Hyaloraphidium contortum Pascher & Korschikov – planktonic; Verkhneye (Upper) Lake; common (own data).

Genus Monoraphidium Komárková-Legnerová

• Monoraphidium minutum (Nägeli) Komárková-Legnerová – planktonic; freshwater; rare (own data: Selenastrum minutum (Nägeli) Collins).

Family Neochloridaceae Ettl & Komárek

Genus Schroederia Lemmermann

• Schroederia setigera (Schröder) Lemmermann – planktonic; Vodoprovodnoye (Potable water) Lake, Verkhneye (Upper) Lake, Verkhneye Ershovskoe lake; common (own data).
• Schroederia spiralis (Printz) Korschikov – planktonic; Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; rare (own data).

Genus Tetraëdron Kützing

• Tetraëdron caudatum (Corda) Hansgirg – planktonic; freshwater; rare (own data).
• Tetraëdron incus (Teiling.) G. M.Smith – planktonic; freshwater; rare (own data).
• Tetraëdron minimum (Braun) Hansgirg – planktonic; freshwater; common (own data).
• Tetraëdron trigonum (Nägeli) Hansgirg – planktonic; freshwater; common (own data).

Family Sphaeropleaceae Kützing

Genus Sphaeroplea C. Agardh

• Sphaeroplea annulina (Roth) C. Agardh – planktonic; Verkhneye (Upper) Lake; sporadic (own data).

Genus Desmodesmus (Chodat) S.S.An, T.Friedl & E.Hegewald, 1999

• Desmodesmus cf. opoliensis (Richter) Hegewald 2000 – freshwater; in the plankton of meromictic lake Trekhtzvetnoe (Mindolina, 2025).

rus: Порядок Sphaeropleales