212 SEVENTEENTH REPORT. 



Xaucoria centiinciila Fr. On decayed wood. Ann Arbor. July- 

 Sept. 

 Xaiicoria lijinicola Pk. On decayed wood. Ann Arbor. Jul v. 

 Xaucoria siparia Fr. On soil or mosses in low woods. Ann Arbor. 



Alio" 

 Xaucoria tabacina Fr. On the ground, cultv. field. Ann Arbor. 



June. 

 Xaucoria triscopoda Fr. (Eeported in 8th. Rep. Mich. Acad. Sci. 



as X. cuspidata Pk., never published.) 

 Xolanea papillata Bres. On the ground, low moist woods. Ann 



Arbor, Bay View, Xew Richmond, Sept. 

 Xolanea pascua Fr. In low, mossy woods. Ann Arbor. Sept. 

 Xolanea versatilis Fr. Among grass in low, moist woods. Ann 



Arbor, Xew Richmond. July-Aug. 

 Omphalia albidula Pk. On leaves and bark in frondose woods. 



Bay View. July. 

 Omphalia olivaria Pk. On decayed logs. Ann Arbor. Sept. 

 Omphalie scyphiformis Fr. On mosses or moist ground. Ann 



Arbor. Aug. 

 Panus strigosus B & C. On trunks of maple, birch and apple 



trees. Houghton, Xew Richmond. Aug.-Sept. 

 Pholiota destruens (Lasch.) Bres. (Syn. P. heteroclita Fr. & P. 



comosa Fr.) On trunks of poplar, birch and willow. Detroit. 



Autumn. 

 Pholi<tta discolor Pk. On decaying wood. Ann Arbor, Xew Rich- 

 mond. May and Sept. 

 Pholiota luteofolia Pk. On decaying log of white oak. Ann Arbor. 



Sept. 

 Pholiota spectabilis Fr. On base of yellow birch trunks, ^Mar- 



quette. Aug.-Sept. 

 Pholiota unicolor Fr. On decaying logs in woods. Ann Arbor. 



Autumn. 

 Pleurotus albolanatus Pk. (^ P. porrigens var. albolanatus Pk.) 



On decaying wood. Bay View, Houghton, Marquette. Aug.- 



Oct. 

 Pleurotus porrigens Fr. On decayed wood of conifers. Marquette, 



etc. 

 Pleurotus subareolatus Pk. On living trunks of maple and bass- 

 wood. Ann Arbor, Xew Richmond, Sept,-Oct. 

 Pluteolus reticulatus Fr. Base of stumps and trunks in woods. 



Ann Arbor. Oct. 



