CLASSIFICATION OF AGARK 



leuca. I ;iin inclined also t<» consider those with separable gills 

 as a distind subgenus, bu1 have avoided thai arrangement in this 

 report for lack of data. 



The key to the species includes a Dumber which have not yet 

 been found in Michigan bu1 which occur i ighboring State 



A | y to tin S/n firs 



(A) Pileus viscid, medium to large. [See also (AA) and (AAA).] 

 (a) Pilous pure white. 721. T. resplendent Fr. 

 taa) Pileus not pure white. 



(b) Gills sulfur-yellow; pileus not virgate. 717. T. eguettre Ft. 

 (hb) Gills not Bulfur-yellow. 



(c) Gills becoming discolored in age, often spotted with brownish- 

 red, 

 (d) Flesh and gills yellowish; stem at first viscid; pileus brown. 



ftavobrunneum Fr. 

 (dd) Flesh and gills white at first. 



(e) Pileus pale pink to rosy-red, margin at first involute. 



(See 163. Hugrophorus russula Fr.) 

 (ee) Pileus reddish-brown to bay-brown. 



(f) Odor distinctly farinaceous when flesh is crushed; taste 



of surface of pileus bitter. 722. T. transmutans Pk. 

 (ff) Odor not farinaceous; stem mostly rooting. 723. T. 

 Hstale Fr. 

 (cc) Gills not discolored, not rufescent. 



(d) Pileus streaked with innate blackish fibrils, 



(e) Taste bitterish or nauseous; pileus whitish to yellowish. 



71S. T. 8ejunctum Fr. 

 (ee) Taste mild; pileus gray, smoky, lurid. 719. T. porten- 

 tosum Fr. 

 (dd) Pileus not streaked. 



(e) Stem floccose-fibrillose; pileus alutaceous. 720. T. ter- 



riferum Pk. 

 (ee) Stem glabrous, 

 (f) Pileus slightly viscid, greenish-yellow; stem white. T. 



intermedium Pk. 

 (ff) Pileus glutinous, yellow-tawny, disk reddish-brown ; base 

 of stem brown. T. oiacOBUm Pk. 

 (AA) Pileus hygrophanous (water-soaked plants of the (AAA) group 

 sometimes have an hygrophanous appearance). 

 (a) Stem sulcate or coarsely striate; pileus reddish or n-ddish-fawn 



color (moist), 5-10 cm. broad. T. gramn opodium Fr. 

 (aa) Stem not sulcate; pileus usually less than 6 cm. broad 

 (b) Gills violaceous (young), then smoky; often In greenhouses, car- 

 dens, etc. 754. T. aordidum Vr. 

 (bb) Gills not at first violaceous. 

 (c) Pileus 1-3 cm. broad, Btem bollow. 

 (d) Pileus olive-gray (moist); odor of rancid meal T. putidum 



Ft. 

 (dd) Pilous watery-brown (moist); odor farinaceous, T. rimo- 

 sum Pk. 



(CC) Pilous 3-7 Cm. broad. 



(d) odor Btrongly farh . pileus grayish-brown or br 



(moist); gills whitish. 763. '/'. leuct tepholoide* Pk. 



i dd I I > i > <!• not farii 



i. | St. Mil brown within and without. Bhort; pilettfl ashy, gr 



ish-brown, darker on disk. T. brevipet Fr. 

 (ee | Stem whitish within; in fields, irar ":■ md, etc. 



