218 



Mycologia 



The specimens have ordinary garden loam attached to their clus- 

 tered stipes. The species resembles A. subrufescens above, but 

 the stipe is much shorter and thicker. 



28. Agaricus placomyces Peck, Ann. Rep. N. Y. State Mus. 29 : 



40. 1878 



Pileus thin, at first convex, becoming flat with age, solitary, gre- 

 garious, subcespitose, or in rings, 5-8 cm. broad ; surface dry, 

 squamulose, whitish, becoming brown with age or when bruised, 

 the disk and small scales blackish-brown ; context rather thin, white 

 or yellowish, without characteristic odor, edible; lamellae free, 

 crowded, white, then pinkish, finally blackish-brown ; spores ellip- 

 soid or ovoid, smooth, purplish-brown under the microscope, 5-6 x 

 3.5-4 p.; stipe slender, smooth, containing a small pith, becoming 

 hollow, slightly tapering upward, bulbous, white or whitish, becom- 

 ing brown when bruised or on drying, 8-13 cm. long, 4-8 mm. 

 thick ; annulus large, flabby, floccose, double, persistent, fixed near 

 the apex of the stipe. 



^ype locality : Oneida, New York. 



Habitat : On the ground in hemlock or mixed woods ; some- 

 times in the open. 



Distribution : Temperate North America, south to Alabama 

 and west to California. 



Illustrations : Ann. Rep. N. Y. State Mus. 48 : pi. 9, f. 7-12; 

 Atk. Stud. Am. Fungi, /. 21-23; Bull. U. S. Dept. Agr. 175: pi. 

 25, f. 1; Hard, Mushr. /. 255-257; Mcllv. Am. Fungi, pi. pi, f. 3. 



In addition to the type material from Oneida, Peck had many 

 other specimens from New York, New England, Missouri, Minne- 

 sota, and elsewhere. I found it on the Pacific coast, but not in 

 tropical regions. It is a very symmetrical and easily recognized 

 species, found especially under hemlock trees. 



29. Agaricus sylvaticus Schaeff. Fung. Bavar. Ind. 62. 1774 



Pileus campanulate to expanded, gregarious, 8-1 1 cm. broad; 

 surface at first grayish, then yellowish-white, covered with brown 

 scales, rufous-fuscous on the disk ; context rather thick, with agree- 

 able odor and taste ; lamellae remote, crowded, rose-colored to red- 

 dish-cinnamon ; spores ellipsoid, smooth, incarnate-fulvous, 6-7 x 

 3.5-4//,; stipe equal or swollen at the base, glabrous or nearly so, 

 whitish, hollow,, 6-9 cm. long, 1-1.5 cm. thick; annulus simple, 

 distant, ample, white, flocculose. 



