Rhizoplaca melanophthalma (DC.) Leuckert & Poelt ssp. cerebriformis Rosentreter & B.D. Ryan
Remarks: ID certainty: certain

Idaho: Custer County: Just N of Pete Creek, at small side road. West between dear and curve signs. Highway 93, about 1 mile North of Mackay Reservoir. Elev. 1900 m.
43.9794998° N, -113.7294006° W; T8N R23E S33
Datum: WGS84.
Winterfat and shadscale flats habitat. Vagrant Rhizoplaca extremely abundant. Fertile. With white markings. On gravelly limestone soil. Molecular tested in 1999 by Arup. Det. Roger Rosentreter March 2007.

S. D. Sharnoff 680.20, Jun 17, 1990
With Stephen Sharnoff
RR, Barcode: SRP-L-0008479