Publication: Fl. Bor.-Amer. 2: 243. 1803.
Origin:
Herbarium search: CPNWH
Notes: Though collected as an escape from cultivation in King Co. (voucher currently not in WTU collections), it does not appear to be established in the flora. Until specimens are collected indicating otherwise, this species is considered excluded from the flora.
References:
Last updated 3/30/2010 by David Giblin.