Publication: Sp. Pl. 3: 1956.
Origin: Native? Introduced in OR (Chambers and Sundberg 2000), uncertain if native in BC (Douglas et al. 1998)
selected vouchers: WTU
Notes: FNA considers and H&C (1973) consider this taxon native.
Introduced (in OR, Chambers and Sundberg (2000), uncertain if native in BC (Douglas et al. 1998
Reported in WA by Creso (1984)