84 SECTION CAMAROPHYLLOPSIS 



mogeneous, composed of subparallel hyphae, the surface hyphae fus- 

 cous, the end-cells inflated (globose, ovoid, pyriform, clavate), more 

 or less erect (forming a trichodermium ) or appressed against the 

 surface. Clamp connections none. 



Habit, Habitat, and Distbibution — On soil, in deciduous and 

 mixed woods, swamps, on lawns, and under bracken fern, Michigan, 

 Massachusetts, Tennessee, and North Carolina, July-October. 



Matebial Studied — Michigan: Mains 32622; Smith, Oakland 

 County, Oct. 1939. Massachusetts: Davis, from Stow, Aug. 30, 1906. 

 NOBTH Carolina: Coker 2620, 2798; Couch 5334. Tennessee: Hesler 

 19241; Smith & Hesler 7397. 



Obsebvations — The whitish gills which become gray furnish a 

 good character to separate this species from H. hijmenocephalus. An 

 interesting feature of our collections is the manner in which the ends of 

 the hyphae forming the surface of the pileus are frequently differenti- 

 ated. The end cell is somewhat oval to club-shaped, and slightly thicker 

 than the main filament. All that is necessary here for the production of 

 an hymeniform surface layer is for all these hyphae to produce the 

 same type of end cell, and for these cells to become oriented perpen- 

 dicularly to the surface and more enlarged. The hymenium and gill 

 trama of H. peckianus become very dark rusty brown in iodine and 

 the pileus trama yellowish to sordid yellowish brown. 



28 



Hygrophorus paupertinus Sm. & Hes. 



Lloydia 5: 13. 1942 



Armillariella paupertina (Sm. & Hes.) Singer, Lilloa 22: 216. 1951. 



Illustration: 

 Fig. 22. 



Pileus (5)10-20 mm broad, convex to nearly flat, the thin margin 

 usually becoming wavy or somewhat elevated, sordid Isabella color 

 when young but soon changing to sordid drab or dark brownish gray, 

 sometimes fading to whitish or pallid sordid gray, surface appearing 

 dry and under a lens minutely appressed fibrillose, sometimes fibrillose- 

 furfuraceous near the margin. Context thin, very fragile, grayish; odor 

 exceedingly strong, penetrating, disagreeable, taste mild; no color 

 change noted on bruised portions. 



Lamellae distant to subdistant, pallid or pale drab, very narrow 

 (almost fold-like in some), decurrent. 



Stipe 1-2 ( 3 ) cm long, 3-6 mm thick at the apex, concolorous with 



