TLATE XV 



THE ELM MUSHROOM 



Agaricus ulmarius 



Pileus: From three to five inches in diameter. Color, pale 

 yellow or buff ; smooth in young specimen, fissured, 

 spotted, and leathery at maturity. Flesh in section white. 



Gills : Dingy white, becoming tawny at maturity, extending 

 down the stem. 



Stem : Various in length, occasionally very short and attached 

 to side of pileus; generally longer as in Plate, and "off 

 centre"; white; substance solid. 



Spores: White. 



Taste: Suggesting fish when cooked. 



Odor: Pleasant. 



Habitat : Trunk of elm or from surfaces of broken or sawn 

 branches. Often growing in dense masses covering sev- 

 eral square feet. 



