THE WHITB-SPORED AGARICS 



125 



Myccna vitrea. Fr. 



Vitrea, glassy. This plant is quite fragile. The pileus is membranaceous, 

 bell-shaped, livid-brown, finely striate, no trace of umbo. 



The gills are firmly attached to the stem, not connected by veins, distinct, 

 linear, whitish. 



The stem is slender, slightly striate, polished, pale, base fibrilose. This species 

 differs from M. aetites and M. stannea in gills not having a decurrent tooth and 

 not being connected by veins. 



Figure 92. Mycena stannea. Natural size. Caps white, sometimes smoky. 



Mycena corticola. Fr. 



Corticola means dwelling on bark. 



It is one of the smallest of the Mycenas, the pileus being about two to four 

 lines across, thin, hemispherical, obtuse, becoming slightly umbilicate, deeply 

 striate, glabrous or flocculosely pruinose, gray, tan, or brownish. 



The gills are attached to the stem, with slight decurrent tooth, broad, rather 

 ovate, pallid. 



The stem is short, slender, incurved, glabrous or minutelv scurfv, somewhat 



