Arenaria rossii R. Br. ex Rich.
[= Sabulina austromontana]

Idaho: Custer County: Salmon-Challis National Forest. Lost River Range. Upper Merriam Lake Basin.
44.116004° N, 113.755811° W,
Datum: WGS 84. Uncertainty: 873 meters. Coordinate Source: Digital Map.
Moist sedge meadow at upper end of lake with small braided stream entering. Substrate is a mixture of quartizite and limestone dolomite. On divided between stream with Erigeron compositus var. glabratus. Occasional, petals present, white. Plants forming small cushions. Some flowers without petals, capsules with 3 entire valves. Phenology: Flowers and Fruits.

Douglass Henderson 4703, Jul 21, 1978
ID, Accession: 132465, Barcode: ID089976