Which genus is native to western North America, Purshia or Bulbinella?
Purshia Purshia (bitterbrush or cliff-rose) is a small genus of 5-8 species of flowering plants in the family Rosaceae, native to western North America, where they grow in dry climates from southeast British Columbia in Canada south throughout the western United States to northern Mexico. The classification of "Purshia" within the Rosaceae has been unclear. The genus was originally placed in the subfamily Rosoideae, but is now placed in subfamily Dryadoideae.
Pinguicula macroceras Pinguicula macroceras, the California butterwort or horned butterwort, is a species of perennial carnivorous herb that is native to the North American Pacific coast, as well as other select distributions in Canada, Russia, Japan, and the U.S.. Common names include California butterwort, horned butterwort and butterwort. "Pinguicula macroceras" belongs to the "Pinguicula" genus and the Lentibulariaceae family.