Micromphale arbuticola
Mycologia 77(6): 894. 1985.
Common Name: none
For description see Desjardin & 'California Mushrooms'.
Gregarious on scale bark of madrone (Arbutus menziesii); not uncommon, fruiting from late fall through spring throughout the range of madrone when moisture levels are high.
Unknown.
Micromphale arbuticola can be distinguished by its small size, dark brown, sulcate cap, short, dark brown, minutely pruinose, insititious stipe, and strong garlic odor. The genus Micromphale has been subsumed into Gymnopus, and this species should be transferred there, where it would be allied with Gymnopus foetidus. A few small grayish brown Mycena species may grow in the same habitat, but they all lack a fetid odor and have quite different micromorphology.
Desjardin, D. E. (1985). The Marasmioid Fungi of California. Masters Thesis. San Francisco State University: San Francisco, CA. 287 p.
Desjardin, D. E. (1985). New Marasmioid Fungi from California. Mycologia 77: 894-902. (Protologue)
Desjardin, D. E. (1987). The Agaricales (Gilled Fungi) of California. 7. Tricholomataceae I. Marasmioid Fungi. Mad River Press: Eureka, CA. 100 p.
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Siegel, N. & Schwarz, C. (2016). Mushrooms of the Redwood Coast. Ten Speed Press: Berkeley, CA. 601 p.
