Botrydium
Botrydium is a genus of thalloid algae. Specimens can reach around 2 mm in size and produce tetraspores.
Species
Some currently recognised species:Botrydium becherianumBotrydium corniformeBotrydium cystosumBotrydium divisumBotrydium granulatumBotrydium intermediumBotrydium milleriBotrydium pachydermumBotrydium stoloniferumBotrydium tuberosum- ''Botrydium wallrothii''