Clitocybe trulliformis

features include dry, gray cap with darker center and with velvety surface or with fine scales on disc; adnate to decurrent, whitish to creamy yellow gills; pale fawn to buff stem; farinaceous odor and taste; and white spore deposit; 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 16 collections of Clitocybe parilis at the University of Washington (Sara Clark, pers. comm.), and Bigelow includes Clitocybe parilis (Fr.) Gillet sensu Lange with C. trulliformis (Fr.) Quel.; collections of C. trulliformis examined from BC, WA, OR, ID, also QC, AZ, CA, CO, MA, MI, NC, NH, NM, NY, TN, VT, Switzerland, (Bigelow)