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Petalonia fascia is a species of brown algae in the family Scytosiphonaceae. They are native to Santa Catarina, Rio Grande Do Sul, Rio De Janeiro, Paraná, and SãO Paulo.

EOL has data for 17 attributes, including:

Known occurrences, collected specimens and observations of Petalonia fascia (O. F. Müller) Kuntze 1898. View this species on GBIF