Publication: Ess. Agrostogr. 31, 151. 1812.
Origin: Introduced from Europe
Herbarium search: CPNWH
Notes: FNA24: "Introduced from Europe, it now grows from British Columbia south to Arizona and New Mexico, as well as in Ontario and a few scattered locations in the eastern part of the Flora region."
Last updated 11/23/2023 by David Giblin.