REPORT OF THE STATE BOTANIST I907 I4I 



the mass, becoming convex with age, depressed around the stem, 

 their mouths minute, whitish when young, becoming brownish with 

 age; stems long, rather slender, equal or tapering upward, solid, 

 scurfy or appressed scaly, grayish; spores oblong- fusiform, .0005- 

 .0008 of an inch long, .0002-.00024 broad. 



The snowy boletus is so closely related to the scabrous stemmed 

 boletus that it is treated as a variety of it in H y m e n m y c e t e s 

 E nr p e a e . But it has recently been raised again to specific 

 rank. It differs from the scabrous stemmed boletus not only in the 

 color of its cap but also in its smaller tube mouths and in the char- 

 acter of its stem which lacks the fibrous black or reddish points 

 which so distinctly mark B. s c a b e r . Sometimes the whitish cap 

 becomes tinged with green or bluish green, specially on the margin. 

 The species is rare, having been observed and collected by the writer 

 twice only, and both times in one locality. It occurs in August and 

 is gregarious in its mode of growth. Its cap is 2-4 inches broad, 

 its stem 3-5 inches long and 3-6 lines thick. Its edible qualities are 

 similar to those of the scabrous stemmed boletus. 



NEW YORK SPECIES OF PHOLIOTA 

 Pholiota Fr. 



The genus Pholiota belongs to the series Ochrosporae which is 

 characterized by spores of an ochraceous or subferruginous color. 

 It is not in all cases sharply limited from allied genera because of 

 the varying character of some of its species. It corresponds in 

 structure to Armillaria in the white spored series and Stropharia in 

 the brown spored series. In the group Phaeotae of the terrestrial 

 species the spores are brown enough to cause some difftculty in 

 deciding whether a given species should be placed in Pholiota or 

 Stropharia. The variability in the development of the veil may also 

 cause some perplexity. Species in which the veil is but slightly 

 developed and very fugacious are liable to be referred to the genus 

 Flammula or Naucoria. In Pholiota o r n e 1 1 a Pk. the 

 remains of the slight veil arc so conspicuously adherent to the 

 margin of the pileus as to suggest a reference to the genus 

 Hypholoma unless the spore color is carefully noted. The promi- 

 nent characters of the genus arc : 



Hymenophorum continuous with tlie stem; lamellae attached to 

 the stem ; stem annulate. 



Some of the species grow on the ground, but the greater number 

 grow on dead or decaying wood. 



