Phylloporus arenicola
Mycologia 64(5): 1150. 1972.
Common Name: gilled bolete
For description see Smith & Trappe, Siegel & Schwarz, & 'California Mushrooms'.
Solitary to scattered in soil under oaks and Douglas fir in mixed forests; fruiting from fall through winter, widely distributed.
Edible.
Phylloporus arenicola can be distinguished by the velvety brown to olive-brown cap, bright yellow adnexed to adnate gills that seldom stain blue when bruised, and a tapered yellow stipe with reddish brown discolorations and yellow mycelium. Phylloporus is more closely related to boletes than to other gilled mushrooms and is accepted in family Boletaceae. Phylloporus rhodoxanthus has been reported from California, but it has red shades on the cap surface, the gills are decurrent and bruise blue more readily, and ammonium hydroxide on the cap turns blue. Our P. rhodoxanthus shows subtle differences from east coast populations and may represent a distinct species or we may have only one variable species. More research/data is needed to clarify this situation.
Bessette, A.E., Roody, W.C. & Bessette, A.R. (2000). North American Boletes: A Color Guide to the Fleshy Pored Mushrooms. Syracuse University Press: Syracuse, NY. 400 p.
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Neves, M.A. & Halling, R.E. (2010). Study on species of Phylloporus I: Neotropics and North America. Mycologia 102(4): 923-943.
Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.
Smith, A.H. & Trappe, J.M. (1972). The Higher Fungi of Oregon's Cascade Head Experimental Forest and Vicinity: I. The Genus Phaeocollybia (Agaricales) and Notes and Descriptions of Other Species in the Agaricales. Mycologia 64(5): 1138-1153. (Protologue)
