The Genus Centaurium

Common Centaury, European Centaury: Centaurium erythraea (Synonyms: Centaurium minus, Centaurium umbellatum, Erythraea centaurium) - Flowers commonly with 5 corolla lobes, the corollas often pink in color.

Desert Centaury, Great Basin Centaury, Western Centaury: Centaurium exaltatum (Synonyms: Centaurium namophilum var. nevadense, Centaurium nuttallii, Cicendia exaltata) - Flowers commonly with 4 corolla lobes, the corollas often creamy in color.

Monterey Centaury, Muhlenberg's Centaury: Centaurium muehlenbergii (Synonyms: Centaurium curvistamineum, Centaurium floribundum, Centaurium muhlenbergii) -