Publication: Harvard Pap. Bot. 12: 426. 2007.
selected vouchers: Not at WTU; WS?
Notes: See WNHP Rare Plant list for details on this species.
FNA7: "I have seen limited material of var. lemhiensis, and all the differences given by R. C. Rollins (1993) to separate it from var. perplexa (e.g., style and pedicel length, density of indumentum) are quantitative characters that show continuous, uncorrelated variation. Sandbergia perplexa is known from counties in Idaho (Adams, Butte, Custer, Idaho, Lemhi, Valley), Montana (Beaverhead), and Washington (Douglas)."