168 Forty-fourth Report on the State Museum 



Spongiosa 



Pileus compact, becoming- spong-y, fleshy quite to the margin, 

 obtuse, even, g-labrous, moist; stem stout, fibrous-spongy, com- 

 monly thickened at the base; lamellae at length spuriously but 

 sinuately decurrent. 



Mostly autumnal, growing in troops. T. album. T. nohile and T. 

 laterarium, though having the pileus dry, are placed in this group 

 because of their affinities and their agreement with it in other 

 respects. 



Lamellae reticulately connected • patulum. 



Lamellae distinct ' 1 



1. Pileus wholly white or white tinged with yellow rust color ... 2 

 1. Pileus some other color 6 



2. Stem hollow leucocephalum. 



2. Stem solid 3 



3. Margin of the pileus with subdistant short radiating 



ridges laterarium. 



3. Margin of the pileus even 4 



4. Lamellae changing color with age grave. 



4. Lamellae not changing color 5 



5. Pileus glabrous album. 



5. Pileus minutely squamulose nobile. 



6. Lamellae at first violaceous personatum. 



6. Lamellae at first white or whitish 7 



7. Lamellae becoming tawny or subochraceous grave. 



7. Lamellae not assuming this color 8 



8. Pileus greenish virescens. 



8. Pileus smoky -yellow f umosiluteum. 



8. Pileus whitish tinged with brown fumidellum. 



Tricholoma patulum Fr. 



Wide Tricholoma 



(Hym. Europ. p. 69. Syl. Fung:., Vol. v, p. 125. GUtocyhe patuloides. N. Y. State Mus. 

 Rep., 32, p. 25.) 



Pileus fieshy, firm, convex or plane, obtuse, often repand, even, 

 glabrous, pale cinereous inclining to yellowish, flesh white ; lamellae 

 emarginate, crowded, reticulately conneGted, white ; stem thick, solid, 

 firm, equal, elastic, glabrous, white or whitish ; spores subglobose 

 or broadly elliptical, .00025 to .0003 in. long. 



Pileus 1 to 4 in. broad ; stem 2 to 3 in. long, 4 to 10 lines thick. 



Thin woods and groves. Onondaga county. Sej)tember. 



