Slender phlox

Microsteris gracilis

''Microsteris'' is a monotypic genus of flowering plants in the phlox family containing the single species ''Microsteris gracilis'', known by the common name slender phlox.

The segregation of this species into a genus of its own is controversial, and many botanists continue to include the plant in genus ''Phlox''. Genetic analysis is continuing.