Oryzopsis micrantha (Trin. & Rupr.) Thurb.
[= Piptatheropsis micrantha]
Annotated by Klaus H. Lackschewitz, 12 Jun 1978.

Montana: Phillips County: "Slippery Anne" Ranger Station, Charles M. Russell National Wildlife Refuge; Near road to Station.
47° 39' 5.73" N, 108° 40' 51.1" W; T22N R23E S19
Coordinate Source: Specimen Label.
Small colonies in many places on steep N-slope of coulee with stand of douglas fir. Herbarium of U.S. Fish & Wildlife Service, Lewistown, Montana.¶¶TRS given falls in Fergus county and does not match habitat description. Likely that TRS is meant to be NW Sec.19 T22N R24E, as this is much closer to the road to old Slippery Anne ranger station and fits habitat description better.(seems to be a common issue with Lackshewitz' collection around this area that R24E makes more sense than R23E)¶¶specimen mapped to T22N R24E S19 NW Phenology: Fruits.

Klaus H. Lackschewitz 8133, Jun 12, 1978
MONTU, Accession: 82068