Xeromphalina cauticinalis
Bull. Soc. Mycol. Fr. 50: 18. 1934.
Common Name: none
For descriptions see Miller, Knudsen & Vesterholt (2008), and 'California Mushrooms'.
Scattered to densely gregarious, terrestrial in conifer debris; fruiting from fall through early winter, widely distributed.
Unknown.
Xeromphalina cauticinalis can be distinguished by its bitter taste, growth on the ground in conifer duff, branched, coralloid cystidia, and red KOH reaction. Xeromphalina campanella grows on conifer wood, is mild, turns yellowish brown in KOH, and has simple, fusoid to clavate cystidia. The rare Xeromphalina fulvipes grows in the same habitat but has adnate (not decurrent) gills and much narrower spores.
Antonín, V. & Noordeloos, M.E. (2004). A monograph of the genera Hemimycena, Delicatula, Fayodia, Gamundia, Myxomphalia, Resinomycena, Richenella, and Xeromphalina in Europe. IHW Verlag: Eching, Germany. 279 p.
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Knudsen, H. & Vesterholt, J. ed. (2008). Funga Nordica: Agaricoid, boletoid and cyphelloid genera. Nordsvamp: Copenhagen, Denmark. 965 p. (PDF)
Knudsen, H. & Vesterholt, J. ed. (2012). Funga Nordica: Agaricoid, boletoid, clavarioid, cyphelloid and gastroid genera. Vol. 1. Nordsvamp: Copenhagen, Denmark. 511 p.
Miller Jr., O.K. (1968). A revision of the genus Xeromphalina. Mycologia 60: 156-188. (PDF)
Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.
Watling, R. & Turnbull, E. (1998). British Fungus Flora: Agarics and Boleti. Vol 8. Cantharellaceae, Gomphaceae, and Amyloid-Spored and Xeruloid Members of Tricholomataceae (excl. Mycena). Royal Botanic Garden: Edinburgh, Scotland. 189 p.