Order Tetrasporales

Family Chlorangiellaceae Bourrelly ex Fott

Genus Chlorangiella De Toni 1889

• Chlorangiella pygmaea (Ehrenberg) Silva – on algae, sphagnum mosses, planktonic crustaceans; supralittoral basins, boggy pools, Verkhneye (Upper) Lake (own data).

Family Palmellaceae Decaisne

Genus Sphaerocystis R. Chodat

• Sphaerocystis schroeteri Chodat – freshwater, Verkhneye (Upper) Lake, Vodoprovodnoye (Potable water) Lake; planktonic (Бизина, 1998). Plankton; lakes; dominant (own data).

Family Tetrasporaceae (Nägeli) Wittrock

Genus Apiocystis Nägeli

• Apiocystis brauniana Nägeli – on pine pollen; supralittoral freshwater pool; Ermolinskaya Inlet; sporadic (own data).

rus: Порядок Tetrasporales