296 



Mycologia 



Searsville Lake, California, McMurphy scales more broken 

 into fibrils and color somewhat darker, but otherwise like the 

 Washington plants. 



7. Agaricus Pattersonae Peck, Bull. Torrey Club 34 : 347. 



1907 



Pileus fleshy, firm, convex or nearly plane, glabrous or minutely 

 silky, white or whitish, often mottled with brownish squamules; 

 flesh firm, white, taste fungoid ; lamellae close, free, pink, becom- 

 ing blackish-brown or black with age ; stem equal or slightly 

 tapering upward, firm, stuffed, bulbous, white or whitish, the 

 annulus white, often rupturing and partly adhering to the margin 

 of the pileus; spores broadly ellipsoid, 8-g fi long, 5-6 />t broad. 



Pileus 6-14 cm. broad ; stem 7-12 cm. long, 2-3 cm. thick. 



Described from specimens collected by Miss Patterson under 

 pine and cypress trees at Stanford University, California. The 

 types at Albany are in poor condition, but the photograph ac- 

 companying them shows imbricated fibrils and scales over the 

 surface similar to those of the dark form of A. campestris, to 

 which it seems closely related. 



Stanford University, California, Miss Patterson 18. 



8. Agaricus hondensis sp. nov. 



Pileus convex to plane or somewhat depressed, solitary, 7 cm. 

 broad ; surface dry, smooth, glabrous, white to slightly purplish- 

 black, the center concolorous ; lamellae free, crowded, ventri- 

 cose, at length fuliginous ; spores ellipsoid, smooth, pale purplish- 

 brown under a microscope, 5 X 2.5 />t ; stipe somewhat fusiform 

 with a small bulb, dry, smooth, glabrous, white, 9 cm. long, i cm. 

 thick at the center; annulus ample, simple, persistent, fixed, 

 superior. 



Type collected in sandy loam under redwoods at Ca Honda, 

 California, November 25, 191 1, W. A. Murrill & L. R. Ahrams 

 1260. 



9. Agaricus bivelatus Peck, Bull. Torrey Club 36: 335. 1909 



Pileus fleshy, thin, broadly convex, radiately fibrillose and floc- 

 cose, cream-colored slightly tinged with pink, smoky-brown in 

 the center; lamellae thin, close, free, pink then seal-brown; stem 



