Phaeocollybia olivacea
Brittonia 9: 204. 1957.
Common Name: none
For descriptions see Norvell & Exeter & Siegel et al.
Clustered to gregarious in soil in mixed hardwood-conifer forests; fruiting from fall through
mid-winter in the Klamath Range (common), Cascade Ranges (not uncommon), and Sierra Nevada (rare).
Unknown.
Phaeocollybia olivacea can be distinguished by a viscid, olive-green, grayish olive, or olive-brown cap, yellowish buff to pale cream young gills, and a stuffed, orangish red stipe. It is similar to the rare P. pseudofestiva, but the latter has a stipe that is hollow in age and smaller spores. Phaeocollybia fallax, also with an olive-green cap, has violet gills when young and a two-toned (violet and orangish brown) stipe.
Arora, D. (1986). Mushrooms Demystified. Ten Speed Press: Berkeley, CA. 959 p.
Castellano, M.A., Cázares, E., Fondrick, B. & Dreisbach, T. (2003). Handbook to additional fungal species of special concern in the Northwest Forest Plan (Gen. Tech Rep. PNW-GTR-572). U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station: Portland, OR. 144 p. (PDF)
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Norvell, L. & Exeter, R.L. (2009). Phaeocollybia of Pacific Northwest North America. US Department of Interior, BLM: Salem, OR. 229 p. (PDF)
Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.
Siegel, N., Vellinga, E.C., Schwarz, C., Castellano, M.A. & Ikeda, D. (2019). A Field Guide to the Rare Fungi of California's National Forests. Bookmobile: Minneapolis, MN. 313 p. (PDF)
Smith, A.H. (1957). A contribution toward a monograph of Phaeocollybia. Brittonia 9: 195-217. (Protologue) (PDF)
