The thinned site, a mixed P. menziesii/Tsuga heterophylla
forest, was on Green Peak in the Oregon Coast Range, about
29 km SW of Corvallis, Oregon (10T 464001 4912801) at an
elevation of 558 m. The site was in a documented P. attenuata
area that was thinned in 1999 to 300 trees ha1, and again in
2010 to a final density of 120 trees ha1. Soil samples were
collected on Nov. 9, 2011 from two parallel transects. The
transects were 20 m long and spaced 2 m apart. Fifty equally
spaced samples were taken from each transect. Phaeocollybia
attenuata was fruiting at the time of sampling, and various
other non-Phaeocollybia sporocarps were present on the study
site.