Gentianaceae

Members of the Gentian Family with Floral Parts in 4s:

Whitestem Frasera: Swertia albicaulis (formerly Frasera albicaulis)

Western Centaury: Centaurium exaltatum (Corolla lobes number 4 or 5)

Members of the Gentian Family with Floral Parts in 5s:

Common Centaury, European Centaury: Centaurium erythraea

Explorer's Gentian, Mountain Bog Gentian: Gentiana calycosa