U.S.A., Oregon, Multnomah, Just below trailhead, Larch Mountain summit, Mount Hood National Forest.
45.53111 -122.08917 +-10000m. WGS 84
In rocky soil and wood humus, gregarious in old (>120 year-old) Abies procera and Tsuga heterophylla.
Cited in Norvell, 1998 (UW PhD Dissertation). Full description in Norvell notebook. Young basidiomes - spores reflect P. kauffmanii. Additional notes present. Substrate: terricolous.