Chaetophorales is an order of green algae in the class Chlorophyceae. Algae in the order Chaetophorales consist of filamentous, branched algae. The thalli have two parts, a prostrate and upright section, and the filaments are variously branched. The algae are found in freshwater habitats or terrestrial habitats.
Families Chaetophorales consists of the following families:
Aphanochaetaceae Oltmanns Barrancaceae Caisová et al. Chaetophoraceae Greville Fritschiellaceae Caisová & Melkonian Schizomeridaceae G.M.Smith Uronemataceae Caisová et al.
Phylogenetic relationships within the order are as follows:
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