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Lolium perenne (Perennial Ryegrass) is a species of perennial herb in the family True grasses. They have a self-supporting growth form. They are associated with freshwater habitat. They are native to Western North America. They have simple, broad leaves and yellow flowers. Individuals can grow to 3.5 feet.

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EOL has data for 86 attributes, including:

Known occurrences, collected specimens and observations of perennial ryegrass. View this species on GBIF