Pleated Gentian, Prairie Gentian: Gentiana affinis (Synonyms: Gentiana affinis var. parvidentata, Gentiana interrupta, Gentiana oregana, Gentiana affinis var. oregana, Gentiana affinis var. ovata) -
Explorer's Gentian, Mountain Bog Gentian: Gentiana calycosa (Synonym: Gentiana calycosa var. calycosa) -
Swamp Gentian: Gentiana douglasiana
Elegant Gentian, Klamath Gentian: Gentiana plurisetosa -
King's Gentian, Staff Gentian: Gentiana sceptrum (Synonyms: Gentiana menziesii, Gentiana sceptrum var. cascadensis, Gentiana sceptrum var. humilis, Gentiana sceptrum var. sceptrum) -
Elegant Gentian, Mendocino Gentian: Gentiana setigera (Synonym: Gentiana bisetaea) -