Murrill: Dark-spored Agarics 



219 



Type locality : Bavaria. 

 Habitat : On the ground in woods. 



Distribution : Temperate North America, Canada to Alabama 

 and west to California; also in Europe. 



Illustrations : Bres. Fungi Trid. i : pi. po; Richon & Roze, 

 Atl. Champ, pi. 18, f. 6-9; Schaeff. Fung. Bavar. pi. 242. 



Peck recognized two color forms, one light and the other dark. 

 He had specimens from Canada, Vermont, Illinois, etc., as well as 

 from New York, but most of them appear to be different from 

 plants collected by me in Sweden and other authentic material 

 obtained from Bresadola. The typical plant is covered above with 

 brown scales and does not change in color as does A. haem'or- 

 rhoidarius. 



30. Agaricus subrufescens Peck, Ann. Rep. N. Y. State Mus. 



46:25. 1893 



Pileus at first deeply hemispheric, becoming convex or broadly 

 expanded, cespitose, 5-18 cm. broad; surface silky-fibrillose, be- 

 coming conspicuously squamulose, whitish, grayish, or dull-red- 

 dish-brown, usually smooth and reddish-brown on the disk; mar- 

 gin not striate, often splitting with age ; context white, unchanging, 

 with the taste of green nuts and the odor of almonds when 

 crushed; lamellae free, narrow, crowded, at first white or whitish, 

 then pinkish, finally blackish-brown ; spores ellipsoid, smooth, dark- 

 purplish-brown under the microscope, 6-7.5 x 4—5 ; stipe rather 

 long, often somewhat thickened or bulbous at the base, at first 

 stuffed, then hollow, white and subglabrous above the annulus, 

 floccose-fibrillose to somewhat scaly toward the base, 6-15 cm. 

 long, 1— 1.5 cm. thick at the top, twice as thick below; annulus 

 rather distant, very ample, reflexed, double, smooth and white 

 above, ornamented with floccose, pale-tawny scales below. 



Type locality : Glen Cove, Long Island, New York. 



Habitat : On leaf-mold in woods and on compost heaps consist- 

 ing mainly of decaying leaves. 



Distribution : New York to Michigan and southward ; also 

 cultivated. 



Illustrations: Ann. Rep. N. Y. State Mus. 48: pi. 7; Bull. 

 U. S. Dept. Agr. 175: pi. 26; Kauffm. Agar. Mich. pi. 48-50. 

 This splendid species grows wild and is sometimes cultivated. 



