Evolvulus nuttallianus Schult.
Annotated Dec 2003.

Montana: Big Horn County: OW ranch, 15 miles southeast. Decker.
44.995434° N, 106.265959° W,
Datum: NAD 83. Uncertainty: 1000 meters. Coordinate Source: Digital Map. NAD_1983_StatePlane_Montana_FIPS_2500
Sandy soil. Andrea Pipp reports "I found the OW Ranch on the Cadastral website and it owns a lot of land and its headquarters has the mailing address of 21720 Quietus Road, Decker, MT. What I mapped put the location in Powder River and the label does say Big Horn County. Therefore, I could not maintain a distance of 15 miles and keep it in Big Horn County. I have re-mapped it to stay in Big Horn County, about 14 miles southeast of the OW Ranch headquarters.¶ Phenology: Vegetative.

J. C. Wright s.n., Jun 16, 1953
With N. L. Anderson
MONT, Accession: 47084