52 Annual Report of the State Botanist, 



Pileus white or whitish, often darker on the disk or umbo 1 



Pileus some other color 5 



1. Pileus acutely umbonate subacutum. 



1. Pileus not acutely umbonate 2 



2. Lamellae subdiatant 3 



2. Lamellae crowded 4 



3. Plant inodorous, pileus wholly white silvaticum. 



3. Plant with a strong- odor, pileus darker on the disk . . terrseolens. 



4. Stem slightly bulbous albiflavidum. 



4. Stem not at all bulbous lascivum. 



5. Stem solid 6 



6. Stem hollow 7 



6. Lamellae white, pileus pale tan color lascivum. 



6. Lamellae and pileus yellowish chrysenteroides. 



7. Lamellae yellow . •• f allax. 



7. Lamellae whitish infantile. 



Tricholoma subacutum Pk. 



Subacute Tricholoma 



(N. Y. State Mus. Eep. 42. p. 16.) 



Pileus at first ovate or broadly conical, then convex and subacutely 

 uinhonate, dry, silky and obscurely virgate with minute innate fibrils, 

 lohitisJi, tinged with smoky-brown or bluish-gray, darker on the 

 umbo, flesh white, taste acrid or peppery ; lamellae rather close, 

 slightly adnexed, white ; stem equal, stuffed orhoUoiv, silky-fibrillose, 

 white; spores broadly elliptical or subglobose, .00025 to .0003 in. 

 long, .0002 to .00025 broad. 



Pileus 1.5 to 3 in. broad ; stem 2 to 4 in. long, 3 to 6 lines thick. 



Woods and groves. Essex county. September. 



This species is perhaps too closely related to T. virgatum, but it 



is separable by its prominent Subacute umbo, paler pileus, hollow 



stem and hot or peppery taste. The cuticle is separable from the 



pileus. 



Tricholoma silvaticum Fk. 



Wood Tricholoma 



(N. Y. state Mus. Rep. 42, p. 17). 



Pileus convex or nearly plane, dry, glabrous, subumbonate, whitish ; 

 lamellae broad, ventricose, subdistant, adnexed, white ; stem sub- 

 equal, solid, white ; spores rather large, eUiptical, .00045 to .0005 in. 

 long, .0003 broad. 



Pileus 1 to 1.5 in. broad: stem 1 to 2 in. long, 2 to 4 lines thick. 



Mossy ground in woods. Essex county. September. 



