[oregonflora.org] Lookalikes: Lookalikes Differs from featured plant by Frasera speciosa .. two nectary pits per petal (giant frasera) Rainiera stricta .. leaves not whorled (=Luina stricta) (link added by Mary Ann Machi)

[appliedeco.org] Range, Habitat: Also known as the Umpqua green gentian, this plant is endemic to Northern California and Southern Oregon, West of the Cascades. Typically found between 4,500 and 6,500 feet in elevation, F. umpquensis is a cold-loving species which naturally occurs in areas with relatively long and cold winters. (link added by Mary Ann Machi)