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Species Information
Summary: Features include 1) a dry, gray cap with a darker center and with a velvety surface or with fine scales on the disc, 2) adnate to decurrent, whitish to creamy yellow gills, 3) a pale fawn to buff stem, 4) farinaceous odor and taste, and 5) a white spore deposit. It shares only with Clitocybe senilis the microscopic character of a layer of cystidioid end cells on the top surface of the cap, more easily seen in young specimens or on the disc, and distinguishing them from other Clitocybes, (Bigelow). There are 20 collections of Clitocybe parilis at the University of Washington, and Bigelow includes Clitocybe parilis (Fr.) Gillet sensu Lange with C. trulliformis (Fr.) Quel.
Collections were examined from BC, WA, OR, ID, QC, AZ, CA, CO, MA, MI, NC, NH, NM, NY, TN, VT, and Switzerland, (Bigelow).
Gills: "adnate to decurrent, close, narrow; whitish to creamy yellow", (Phillips), adnate to short-decurrent at first, becoming moderately to long-decurrent, close to subdistant, narrow (0.1-0.3cm broad), usually forked, interveined or anastomosing at times; whitish to pale yellowish ("ivory yellow", "waxy yellow"), (Bigelow), quite widely spaced (Siegel)
Stem: 1-4.5cm x 0.1-0.5cm, solid, narrowing slightly toward the base; "pale dirty fawn or pale greenish buff; smooth or with minute hairy furrows", "base with some rhizoids and white mycelium", (Phillips), 1-4.5cm x 0.15-0.5cm at top, equal or narrowing downward slightly, solid; pale sordid buff to pale olivaceous buff or pale cinereous ("deep olive buff"), darker than gills but paler than cap; bald or innately fibrillose-striate, "base usually with whitish mycelium and a few rhizoids", (Bigelow)
Microscopic spores: spores 5-6.5 x 3-4 microns, elliptic, smooth, inamyloid, (Phillips), spores (4)4.5-6(7) x 2.5-3.5(4) microns, elliptic, smooth inamyloid; basidia 4-spored, 18-24 x 4-6.5 microns; [pleurocystidia and cheilocystidia presumably absent]; clamp connections present, (Bigelow)
Spore deposit: white (Phillips, Bigelow)
Habitat / Range
"scattered or in groups on leaf litter or debris" under conifers or hardwoods, (Phillips), scattered or gregarious on humus under conifers or hardwoods, "May to October, but chiefly in July and August", (Bigelow), spring, summer, fall
Similar Species
C. senilis has a felty, often hoary surface that appears rather bald to the naked eye and that may develop concentric cracks, and gills that soon become ashy or smoky colored, whereas Infundibulicybe trulliformis has a velvety cap, at least on the disc, that appears furfuraceous under a hand lens, and gills that are whitish to pale yellowish, (Bigelow).
Bigelow(5) (as C. trullaeformis (Fr.) Quelet), Phillips(1)* (as C. trullaeformis), Courtecuisse(1)* (as Clitocybe trulliformis), Bessette(2)* (as C. trullaeformis), Siegel(2)* (as C. trulliformis) References for the fungi
