Armillaria solidipes
Bull. Torrey Bot. Club 27(12): 611. 1900.
Common Name: none
Synonym: Armillaria ostoyae (Romagn.) Herink
For description see Burdsall & Volk.
In cespitose clusters on conifer trees or logs. Common.
Edible, although some suffer digestive upsets from Armillarias.
Armillaria solidipes can be distinguished by its pinkish brown caps, broadly attached gills, stipes with numerous scales and rounded bases, and growth on conifer wood. Armillaria mellea has a yellowish brown (honey-colored) cap, stipes that are pointed at the base and lacks clamp connections. Armillaria sinapina has a brown cap with prominent pointed scales, a white cobwebby partial veil, a distinctive yellow ring of fibrils on the stipe apex, and fruits singly or in small clusters under conifers.
Burdsall Jr., H.H. & Volk, T.J. (2008). Armillaria solidipes, an older name for the fungus called Armillaria ostoyae. North American Fungi 3(7): 261-267. (PDF)
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Hunt, R., Morrison, D. & Bérubé, J. (2011). Armillaria solidipes is not a replacement name for A. ostoyae. Forest Pathology 41(4): 253-254.
Peck, C.H. (1900). New species of fungi. Bull. Torrey Bot. Club 27(12): 609-613. (Protologue)
Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.