122 SECTION HYGROCYBE 



drab," viscid, often splitting radially along the margin. Context pale 

 greenish yellow, not blackening when bruised; odor and taste mild. 



Lamellae ascending-adnate, "chartreuse yellow" and scarcely 

 changing, broad, ventricose, close, edges eroded. 



Stipe 4-6 cm long, 6-8 mm thick, concolorous with the gills or paler 

 and some whitish at base, overlaid with a thin layer of "olive brown" 

 fibrils to give it a dusky appearance, usually more or less lacerate, 

 equal. 



Spores 8-10 X 5-5.5 /x, ellipsoid, smooth, hyaline to yellowish in 

 Melzer's reagent. Basidia 32-40 X 9-12 /*, clavate, 4-spored. Pleuro- 

 cystidia and cheilocystidia none. Gill trama parallel, yellow in water 

 mounts of fresh material. Pileus with a gelatinous pellicle of hyphae 

 having fuscous content. Clamp connections at the septa. 



Fig. 31. 



H. spadiceus 

 var. spadiceus 

 f. spadiceus 



Habit, Habitat, and Distribution — Scattered under sumac on dry 

 soil after heavy rains, Michigan, July; also Europe. 



Material Studied — Michigan: Smith 32387, 39219. 



Observations — We have identified this material as H. spadiceus 

 knowing that the spacing of the gills is not typical, and that the cap is 

 not truly glutinous as described by European authors. Bresadola, un- 

 der this name, illustrates an agaric with a stipe like that of our 

 f. odorus, and with close gills, but in the description he adheres to the 

 idea of a fibrillose stipe and distant gills. The important characters are 

 the dark pileus toned beneath the cuticle with yellow, the yellow gills, 

 unchanging flesh, and pale olive-yellow stipe. We did not get a good 

 spore deposit and hence cannot verify that the deposit is yellowish as 



