American Harebell, Bluebell Bellflower, Bluebell-of-Scotland, Roundleaf Bluebell, Scots Bellflower: Campanula rotundifolia (Synonyms: Campanula alaskana, Campanula dubia, Campanula gieseckiana, Campanula gieseckiana ssp. groenlandica, Campanula gieseckiana var. arctica, Campanula groenlandica, Campanula heterodoxa, Campanula intercedens, Campanula petiolata, Campanula rotundifolia ssp. groenlandica, Campanula rotundifolia ssp. intercedens, Campanula rotundifolia var. alaskana, Campanula rotundifolia var. alpina, Campanula rotundifolia var. arctica, Campanula rotundifolia var. intercedens, Campanula rotundifolia var. lancifolia, Campanula rotundifolia var. petiolata, Campanula rotundifolia var. velutina, Campanula sacajaweana) -

Rough Bellflower, Rough Harebell: Campanula scabrella -

Pale Bellflower, Scouler's Harebell, Scouler's Bluebell: Campanula scouleri -

Common Downingia, Elegant Calicoflower, Elegant Downingia, Showy Downingia: Downingia elegans (Synonyms: Downingia elegans var. brachypetala, Downingia elegans var. corymbosa, Downingia elegans var. elegans) -

Heterocodon, Western Pearlflower: Heterocodon rariflorum (Synonyms: Heterocodon rariflorum, Specularia rariflora) -