SUBSECTION CAMAROPIIYLLI 331 



Fig. 103. H. sordidus 



Stipe 6-10 cm long, 15-30 mm thick, white, dry, equal, often at- 

 tenuated toward the base, glabrous, even, upper portion obscurely 

 noccose, solid. 



Spores 6-8 X (3.5)4-5.5 ll, ellipsoid, smooth, yellowish in Melzer's 

 reagent. Basidia 38-50 X 5-7 /a, 4-spored ( rarely 2-spored ) . Pleuro- 

 cystidia and cheilocystidia none. Gill trama divergent, hyphae 4-8 /x 

 broad. Cuticle a gelatinous zone 200-280 ll thick, of two distinct zones: 

 (1) an outer zone 50 ll thick of brownish hyphae; (2) an inner, 

 subjacent zone 150-230 ll thick, of colorless, loosely interwoven hyphae; 

 all cuticular hyphae 2-4 ll broad (from type). No hypodermium dif- 

 ferentiated. Pileus trama of radial hyphae. Clamp connections present 

 on the cuticular hyphae. 



Habit, Habitat, and Distribution — Gregarious on soil in open 

 oak-hickory woods, District of Columbia, Maryland, Massachusetts, 



