Prairie Gentian, Pleated Gentian, Rocky Mountain Gentian: Gentiana affinis (Synonyms: Gentiana affinis var. oregana, Gentiana affinis var. ovata, Gentiana affinis var. parvidentata, Gentiana interrupta, Gentiana oregana) -
Explorer's Gentian, Mountain Bog Gentian, Rainier Pleated Gentian: Gentiana calycosa (Synonyms: Gentiana calycosa ssp. calycosa, Gentiana calycosa ssp. obtusiloba, Gentiana calycosa ssp. xantha, Gentiana calycosa var. calycosa, Gentiana calycosa var. obtusiloba, Gentiana calycosa var. xantha, Pneumonanthe calycosa) -
Swamp Gentian: Gentiana douglasiana -
Pale Gentian, Glaucous Gentian: Gentiana glauca (Synonyms: Dasystephana glauca, Gentianodes glauca) -
Newberry's Gentian: Gentiana newberryi var. newberryi -
Staff Gentian, King's Gentian, King's Scepter Gentian: Gentiana sceptrum (Synonyms: Gentiana menziesii, Gentiana sceptrum var. cascadensis, Gentiana sceptrum var. humilis, Gentiana sceptrum var. sceptrum) -