Psorotichia nigra H. Magn.
Remarks: ID certainty: certain

Montana: Roosevelt County: Prairie in Roosevelt County, Montana.
Calcareous soil in dry, open prairie vegetation on slopes with S-SW exposure. On gypsum soil. On calcareous soil. Substrate: Terricolous.

J (Jan) Looman T1711, Jun 27, 1961
RR, Barcode: SRP-L-0008009