Botrydium is a genus of thalloid algae. Specimens can reach around 2 mm in size and produce tetraspores.
Species Some currently recognised species: Botrydium becherianum Botrydium corniforme Botrydium cystosum Botrydium divisum Botrydium granulatum Botrydium intermedium Botrydium milleri Botrydium pachydermum Botrydium stoloniferum Botrydium tuberosum Botrydium wallrothii
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