246 



Mycologia 



4. Pluteolus (Fries) Gill. Champ. Fr. i: 549. 1878 

 I. Pluteolus luteus Peck, Bull. Torrey Club 22: 203. 



1895 



Described from specimens collected by McClatchie under trees 

 near Pasadena, California, in December. Specimens from Stan- 

 ford University, California, Baker 161, distributed as Bolbitius 

 radians Morg., are much larger than the types, reaching 7 cm. 

 broad and 10 cm. high. 



Pasadena, California, McClatchie; Stanford University, Cali- 

 fornia, Baker 161, ^80, Miss Patterson i^, 6j, Nohara 28; Cali- 

 fornia, Harper 14. 



2. Pluteolus stramineus sp. nov. 



Pileus thin, convex, solitary, 5 cm. broad; surface glabrous, 

 viscid, flavous and rugose at the center, pale-stramineous and 

 closely and conspicuously striate from the central area to the 

 margin ; lamellae narrow, free or slightly adnexed, twice inserted, 

 dull dirty-stramineous ; spores ovoid, smooth, bright ochraceous- 

 melleous under a microscope, 1 1-14 X 6-8 /a ; stipe perfectly 

 straight, cylindric, equal, fleshy, smooth, stramineous, pulveru- 

 lent above, hollow, 10 cm. long, 5 mm. thick. 



Type collected in an open grassy yard after a light rain, Cor- 

 vallis, Oregon, November 6-1 1, 191 1, W. A. Murrill lOip. Re- 

 lated to Pluteolus luteus. 



3. Pluteolus californicus McClatchie, Proc. S. Cal. 

 Acad. Sci. i: 383. 1897 



Described from plants collected by McClatchie on dead stems 

 and manure at Compton, California. The specimens sent to Dr. 

 Peck appear to be quite distinct from P. luteus. 



4. Pluteolus parvulus sp. nov. 



Pileus convex to subplane, thin, solitary, scarcely i cm. broad; 

 surface smooth, glabrous, shining, slightly viscid, dark-avella- 

 neous, the small umbo concolorous, margin striate; lamellae free, 

 ventricose, broad, fulvous, the edges white and minutely serru- 

 late; spores ellipsoid, regular, smooth, bright-melleous under a 

 microscope, 9-1 1 X5/^; stipe enlarged at the apex, pulverulent 

 above, glabrous below, smooth, straw-colored, hollow, flaccid and 

 collapsing, 2 cm. long, i mm. thick. 



