SI BSi ( l K>\ MICROSPOR1 H7 



Lamellae adnate to short decurrent, pale gray to "drab gray," 

 broad, subdistant, arched, thick, edges even. 



Stipe 2.5-5 cm long, 3-10 mm thick at the apex, white tapering 

 downward to a slender base, solid becoming hollow, surface glabrous 

 or appearing innately fibrillose under lens. 



Spores 4-5.5 (-6) x .3-4.5 fx, subglobose. smooth, pale yellowish in 

 Melzer's reagent. Basidia 38-50 x .5-6.5 //, 2- and L-spored, sterigmata 

 5-9 /x long, curved. Pleurocystidia and cheilocystidia none, (iill trama 

 interwoven, hyphae cylindrical, 2-4.5 // broad. Cuticle ool gelatinous, 

 cuticular hyphae cylindrical, 1-3 p in diameter, repent or free ends 

 more or less erect; pileus trama) hyphae of the pileus mostly cylindrical, 

 1-4 li in diameter, radially disposed and interwoven. No hypodermium 

 differentiated. Clamp connections present. 



Habit, Habitat, and Distribution — Gregarious in woods, 

 swamps, and Sphagnum bogs, New York, Massachusetts, and Maine, 

 July-September. 



Material Studied — maine: Bigelow 4494. 4669. Massachusetts: 

 Bigelow 7503, 8301, 8347. new yobk: Peck (type, from Sandlake, Au- 

 gust). 



Observations — Notes on the type follow: Spores 4-5.7(6) x 

 3-4.5 fx subglobose, ovoid, or short-ellipsoid, smooth, pale yellow in 



Fig. 23. H. basidiosus (photograph by H. E. Bigelow) 



