Viola nuttallii subsp. praemorsa (Douglas ex Lindley) Piper

Viola nuttallii subsp. praemorsa (Douglas ex Lindley) Piper is a synonym sensu FNA Ed. Comm., 2015 of:

Viola praemorsa Douglas ex Lindley var. praemorsa, an accepted variety name sensu FNA Ed. Comm., 2015.