Callirhoe sprung from mythological origins as the daughter of the river-god Achelous and has found her niche fronting dry garden beds or spilling from rock walls in a fountain of lustrous bloom. This native of the southwest is also known as wine cups for their 1-2" chalice-shaped magenta flowers that combine beautifully with low-growing sedum, California poppies, and other water-wise perennials and annuals in the summer garden.