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Acorus calamus (Sweet Flag) is a species of perennial herb in the family Acoraceae. They have a self-supporting growth form. They are associated with freshwater habitat. They are native to Eastern North America. They have simple, broad leaves and yellow flowers. Individuals can grow to 5 feet.

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EOL has data for 85 attributes, including:

Known occurrences, collected specimens and observations of Sweet Flag. View this species on GBIF