Sistotrema muscicola
Fungi Exsiccati Suecici 29-30: 11. 1947.
Common Name: none
For descriptions see Crusts & Jells, Bernicchia, Bernicchia & Gorjón, & 'California Mushrooms'.
On various types of debris, leaves, and sticks on the ground, or on rotten wood; fruiting from fall through winter, widely distributed.
Unknown.
muscicola can be distinguished by soft, irregular crusts composed of variously shaped teeth and short, irregular, puzzle-like ridges, that are initially white but develop cream to orange-cream colors at maturity. An unusual microscopic feature of many Sistotrema species is an urn-shaped basidium that produces 6–8 spores instead of the usual four. The tooth-like spore surface of Sistotrema muscicola is reminiscent of Steccherinum ochraceum, but the latter forms single spines not fused into puzzle-like ridges and has a dimitic hyphal system and thick-walled, crystal-incrusted cystidia.
Bernicchia, A. (2005). Polyporaceae s.l. (Fungi Europaei). Edizioni Candusso: Alassio, Italy. 807 p.
Bernicchia, A. & Gorjón, S.P. (2020). Polypores of the Mediterranean Region. Romar: Segrate, Italy. 903 p.
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Ginns, J. (1998). Genera of the North American Corticiaceae Sensu Lato. Mycologia 90(1): 1-35.
Jülich, W. & Stalpers, J.A. (1980). The resupinate non-poroid Aphyllophorales of the temperate northern hemisphere. North Holland Publishing Company: Amsterdam. 335 p.
Marino, E., Scattolin, L., Bodensteiner, P. & Agerer, R. (2008). Sistotrema is a genus with ectomycorrhizal species − confirmation of what sequence studies already suggested. Mycol Progress Mycological Progress 7: 169-176.