676 NEW YORK STATE MUSEUM 



This species is white in all its parts and when regular and well formed 

 is a pretty mushroom. But the large specimens are apt to be irregular. 

 The cap is thick and fleshy except at the margin, and though it may be 

 moist it is not viscid. In the European plant its surface sometimes cracks 

 into small areas and becomes floccose when dry, but I have not seen 

 these features in the American plant. The spores in our plant are gener- 

 ally a little smaller than those of the European plant. 



The stem is sometimes thickened upward and enlarges as it enters 

 the cap. The cap is i to 3 in. broad ; the stem i to 2 in. long, 

 3 to 5 lines thick. It is found in grassy ground and pastures in wet 

 weather from July to October. It sometimes occurs in meadows where 

 it is overshadowed by tall grass. I know of no other wholly white in- 

 digenous Hygrophorus that grows in such places. Its flesh is less tender 

 than that of the preceding species, but it is a good mushroom and one 

 that would be more useful if more abundant, and more eagerly sought if 

 better known. 



Hypholoma incertum Pk. 



Uncertain Hypholoma 

 Plate S^^i- 13-20 



Pileus thin, fragile, at first ovate or subcampanulate, then broadly 

 convex, hygrophanous, whitish, often tinged with yellow, commonly 

 white when dry, the thin margin often wavy lobed or irregular and in 

 the young plant adorned with fragments of the white floccose fugacious 

 veil, flesh white; lamellae thin, narrow, close, adnate, at first whitish, 

 then purplish brown ; stem equal, hollow, easily splitting, white or whit- 

 ish ; spores elliptic, 0003 in. long, .0002 broad. 



The thin fragile cap is sometimes split on the margin. It has a moist 

 appearance when young and fresh, but this is lost with age and in dry 

 weather. The prevailing color is white, but a yellow tint is often added, 

 specially in the center. The surface is occasionally slightly radiately 

 wrinkled.. The margin is sometimes curved upward, and a faint purplish 

 tint apparently due to the color of the mature gills, is sometimes seen. 

 In the young plant floccose fragments of the ruptured veil adhere to it, 

 but these soon disappear. 



The gills when young are nearly white, but they become darker with 

 advancing age and when fully mature are purplish brown. They are 

 attached to the stem by their entire width. 



The stem is slender, cylindric, hollow and white. The cap is i to 

 2.5 in. broad; the stem i to 3 in. long, i to 3 lines thick. It grows in 



