298 



Mycologia 



above, becoming yellowish throughout on drying, 7 cm. long, 4 

 mm. thick above, 8 mm. thick below ; annulus white to yellow, 

 membranous, ample, persistent, fixed just above the middle of 

 the stipe. 



Collected in humus on the ground in woods near Seattle, 

 Washington, October 20-November i, 191 1, W. A. Murrill 4^4 

 {type), 5^j. Related to A. comptulus Fries and A. diminutivus 

 Peck. 



13. Agaricus flavitingens sp. nov. 



Pileus hemispheric to broadly convex, not umbonate, drying 

 thin, gregarious, 6 cm. broad; surface dry, smooth, imbricate- 

 fibrillose-scaly, fulvous with a latericeous tint at the center, fad- 

 ing out to stramineous toward the margin ; lamellae free, ventri- 

 cose, not crowded, avellaneous to umbrinous ; spores ovoid, 

 smooth, purplish-brown, 4-5X3-4)^; stipe cylindric, slightly 

 larger at the base, smooth, glabrous, white above the annulus, 

 ochraceous-tinted below, 5 cm. long, i cm. thick ; annulus ample, 

 membranous, persistent, fixed about the center of the stipe, 

 white, changing to yellow on drying. 



Type collected in sandy soil in fir woods near Seattle, Wash- 

 ington, October 20-November i, 191 1, W. A. Murrill ^81. 



14. Agaricus Hillii sp. nov. 



Pileus regular, convex, thick and fleshy, solitary, 5-10 cm. 

 broad ; surface smooth, dry, subglabrous, white, slightly grayish- 

 brown at the center, becoming pale-bay at the center on drying, 

 margin thin, entire, decorated with fragments of the veil; con- 

 text white to slightly pinkish, not changing, with pleasant taste 

 and odor; lamellae free, crowded, broad, ventricose, pink to 

 fuliginous; spores ellipsoid, smooth, purpHsh-brown under a 

 microscope, 5-6 X 3-5 z^^; stipe bulbous, tapering upward, smooth, 

 glabrous, white, pinkish above the annulus, stuffed or hollow, 7- 

 10 cm. long, 8-12 mm. thick; annulus superior, simple, white, 

 large, persistent. 



Type collected among moss and humus in open woods on 

 Mayne Island, Gulf of Georgia, British Columbia, December 12, 

 1904, Albert I. Hill 104. 



15. Agaricus Abramsii sp. nov. 



Pileus irregular, owing to the position of the plant, thick, 

 fleshy, plane, solitary, 6 cm. broad ; surface dry, finely imbricate- 



