Eriogonum microthecum Nutt. var. ambigum (M.E. Jones) RevealOregon: Harney County: Pueblo Mountains, east base of canyon of Van Horn Creek; on steep slopes just north from end of jeep road to canyon mouth. Elev. 1433 m.
42.04444444°, -118.618888889°
Gray barren volcanic deposits on south facing slope. With sparse Tetradymia-Atriplex confertifolia.
D. W. Taylor s.n., 2 Jul 1995
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