Publication: Rhodora 16(187): 118. 1914.
Origin: Native
Herbarium search: CPNWH
Notes: There has been some discussion about this taxon being introduced from east of the Rocky Mountains. Fieldwork in Skamania County over the years suggests that this is not accurate due to the existence of large stands of this taxon in relatively undisturbed forest openings and edge. Where encountered, the upright and larger-fruited var. laevigatus is not encountered.
Last updated 9/14/2021 by David Giblin.