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Rivularia

Rivularia

The tapering filaments are up to 12um in diameter and are much branched, with heterocysts at the bases of the branches. These filaments are united to gorm tough hemispherical colonies several mm in diameter, especially conspicuous on stones in stones in mountain streams, but also occurring on reeds and other stems in pools. 109a, colonies on a stone, natural size: 109b. part of a branched filament; 109c. filaments more highly magnified. 

Calothrix has filaments like Rivularia, but is much less branched, and the filaments occur singly or in tufts rather than colonies.












RlPPLE WALLET : rE9VzDvqozvgbd2trCKitN4fSi6ENiHu41

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