Tall Bluebells, Tall Lungwort, Tall Mt. Mertensia, Northern Bluebells, Panicle Bluebells: Mertensia paniculata var. borealis - Stems in clusters of several to many rising from a stout rhizome or multi-branched, persistent base. Anthers 2.2-3.4 mm long.
Broadleaved Bluebells, Western Bluebells: Mertensia platyphylla (Synonyms: Mertensia platyphylla var. platyphylla, Mertensia platyphylla var. subcordata) - Reported from Mt. Adams, but not verified. Stems arising singly from stout, branched rhizomes. The anthers are 3.4-5 mm long.