Si BS1 CTIOh MICROSPOR1 55 



Fig. 22. //. paupertinus 



the pileus or paler, usually enlarged upward, solid, becoming hollow 

 near the apex at least, fragile, moist, glabrous, faintly longitudinally 

 striate from fine cracks in the cuticle. 



Spores 5-6 X 4-5.5 p, subglobose to short-ellipsoid, rarely globose, 

 smooth, yellowish in Melzer's reagent. Basidia 30-46 x 4-7 p, 4-spored. 

 Pleurocvstidia and cheilocystidia none. Gill trama interwoven, hyphae 

 2—3 /a broad. Cuticle a limited trichodermium, hyphae at times more or 

 less scattered, 2-5 /* broad, the terminal elements at times eystidioid. 

 No hvpodermium differentiated. Pileus trama of radial hyphae. Clamp 

 connections none. 



Habit, Habitat, and Distribution* — Gregarious on humus and soil 

 under redwoods, California, December. 



Material Studied — California: Smith 3680, 3793 (type, Oriek, 

 Dec. 5, 1935), 3941, 9367, 9463. 



Observations — This species resembles H. hymenocephalus in its 

 color change from Isabella color to dark brownish gray or drab, but 

 differs in having a strong odor, and in the nature of the cuticle of the 

 pileus. It is very close to the little known //. peckianus, but differs from 

 that species as we know it in having ver) narrow instead of broad gills 

 and different colors when fresh. H. foctens is a somewhat similar spe- 

 cies, but the pileus is dark brown, becoming squamulose, and the stipe 

 is squamulose. Bresadola (1928) illustrates //. foetens as having a gla- 

 brous stipe but a somewhat scaly pileus. Aside from the presence or 

 absence of scales, H. foetens differs from //. paupertinus in having 

 much broader gills, and in the structure of the cuticle. 



