ssp. borealis Synonymy:   Trientalis americana Pursh

ssp. latifolia (Hook.) Hultén Present in the CalFlora Database but treated as Trientalis latifolia Hook. (California distribution map). Photographs (6) from CalPhotos. Synonymy:   Trientalis europaea var. latifolia (Hook.) Torr., Trientalis latifolia Hook.

ssp. arctica (Fisch. ex Hook.) Hultén Present in the CalFlora Database but treated as Trientalis arctica Hook. (California distribution map). Synonymy:   Trientalis arctica Fisch. ex Hook., Trientalis europaea var. arctica (Fisch. ex Hook.) Ledeb.