Agrostis idahoensis Nash × Agrostis scabra Willd.

Washington: Skamania County: Northeast-facing slopes of Mount Saint Helens, above Timberline Camp.
46.19893° N, 122.18888° W,
Datum: WGS 84. Uncertainty: 5000 meters. Coordinate Source: GeoLocate.
Substratum of pumice talus.

A. R. Kruckeberg 3990, Aug 27, 1955
WTU, Accession: 189809