SUBSECTIOX CAMAROPHYLL1 381 



Fig. 121. H. inocybiformis (photograph by H. E. Bigelow) 



when cut or bruised, thin except on the disc, soft and fragile; odor 

 none, taste mild. 



Lamellae short-decurrent or arcuate, pallid to grayish buff ( "pale 

 olive-buff"), broad, subdistant, rather thick and firm, edges even. 



Stipe 3-6 cm long, 5-12 mm thick, streaked with dark grayish- 

 brown fibrils, up to the zone left by the broken veil, white and gla- 

 brous to appressed silky toward the apex, white within, dry over all, 

 subequal, the base at times slightly narrowed, solid, fleshv. 



Spores 9-14 X (5)6-8 fi, ellipsoid, smooth, not amyloid. Basidia 

 62-84 X 10-12 p, 4-spored. Pleurocystidia and cheilocystidia not differ- 

 entiated. Gill trama divergent, hyphae 6-10 ft broad. Cuticle of chiefly 

 radially arranged, repent, non-gelatinous hvphae, 10-15 n broad, their 

 contents smoky in color and the end-cells more or less pointed, often 

 clustered to form squamules. No hypodermium differentiated. Pileus 

 trama of radially disposed hyphae. Clamp connections abundant. 



Habit, Habitat, and Distribution — Gregarious to scattered un- 

 der spruce and balsam fir, California and Idaho, Julv-October. 



Material Studied — California: Gruber PIT. idaho: Smith 15919 

 (type, collected by W. B. Gruber, from Lick Creek Summit, Idaho Na- 

 tional Forest, Sept. 1943), 4.5462, 45995, 46078, 46086, 46759, 46730, 

 46897, 46959, 46981, 47010, 47067, 47139, 54760, 59327, 59882, 60104, 

 60728; Bigelow 47162; Smith & Bigelow 46729, 46930; Helen V. Smith, 

 Aug. 1945. 



Observations — Because of its fibrillose to squamulose pileus this 

 fungus has somewhat the stature and appearance of an Inocybe or of a 

 small species of the Tricholoma terreum group. Actually, the fungus is 

 closely related to H. pustulatus, but is readily distinguished bv its 



