Harebells: The Genus Campanula - Corolla bell-shaped and regular, the lobes all the same size and shape. Perennials.
Downingias: The Genus Downingia - Corolla irregular, the lobes of different sizes and shapes (flowers somewhat similar to the domestic Lobelia). Annuals.
Common Bluecup, Common Blue Cup, Githopsis: Githopsis specularioides (Synonyms: Githopsis calycina, Githopsis specularioides var. hirsuta, Githopsis specularioides var. hirsuta) - Annuals.
Heterocodon, Rareflower Heterocodon, Western Pearlflower: Heterocodon rariflorum (Synonym: Specularia rariflorum) - Annuals.
Clasping Venus' Looking-glass, Clasping-leaf Venus'-looking-glass, Triodanis, Venus'-looking-glass: Triodanis perfoliata (Synonyms: Legousia perfoliata, Specularia perfoliata, Triodanis perfoliata var. perfoliata) - Annuals.