Supplement 



low, white or whitish. Spores black on white paper, broadly elliptic, 

 10-12 x 7-8/t. 



Pileus 2.5-7cm. broad, stem 2.5-6cm. long, 4-iomm. thick. 



(Plate CCXI.) 



Ground in woods and in open places. 

 Near Pittsford, Monroe county, and at 

 Menands, New York. August. 



This species is closely allied to Hy- 

 pJioloma vclutinnm (Pcrs.) Fr., from 

 which it may be separated by its dry, 

 not hygrophanous, pileus, its whitish 

 flesh and stem, the absence of cystidia 

 and the larger spores. The spore print 

 of both this and Hypholoma rigidipes 

 Pk. is black on white paper. This 

 would indicate a close relationship to 

 the Melanosporae, not only of these 



(Plate CCXII.) 



Vanat 



two species, but probably also of the 

 closely related species, H. velutinum 

 (Pers.) Fr. and H. lachrymabundum 

 Fr. Peck. 



There is no report on the edibility of 

 this species. It is, however, doubtless 

 safe. 



Boletus acidus Pk. Rep., 1905 : 15. 

 Pileus fleshy, rather thin, firm, con- 

 vex, very glutinous when moist, yel- 

 lowish white, the margin of the young 

 plants often appendiculate with frag- 

 ments of the whitish floccose and glu- 

 tinous veil. Flesh whitish, taste acid and disagreeable. Tubes short, 

 adnate, concave in the mass in young plants, becoming plane with age, 

 the mouths minute, subrotund, pale yellow, becoming darker with age. 



734 



1/2 nat.i 



