Murrill : Dark-spored Agarics 



213 



Type locality : Lynn, Massachusetts. 

 Habitat : On sandy soil near salt water. 

 Distribution : Massachusetts. 



The type collected by Dr. R. F. Dearborn in November is well 

 preserved at Albany. Dr. Dearborn also found specimens at 

 Lynn, Nahant, and Marblehead from June to December. Peck 

 has published interesting notes in connection with his description. 

 Mr. Oscar Hill collected it at Revere, Massachusetts, on May 29. 



20. Agaricus magniceps Peck, Bull. N. Y. State Mus. 94: 36. 



1905 



Agaricus magnificus Peck, Bull. Torrey Club 26: 67. 1899; not 

 A. magnificus Fries, 1838. 



Pileus fleshy, thick, convex, becoming nearly plane or centrally 

 depressed, gregarious or cespitose, 5-15 cm. broad; surface gla- 

 brous, often wavy and split on the margin, white or whitish, often 

 brownish in the center; context 1.5-2 cm. thick in the center, thin 

 on the margin, white, unchanging, edible, with taste and odor of 

 anise ; lamellae numerous, rather broad, crowded, free, ventricose, 

 white becoming dark-purplish-brown with age, never pink ; spores 

 small, ellipsoid, 5-6 x 3-4 fi ; stipe firm, stuffed with a cottony pith, 

 bulbous or thickened at the base, fibrillose, striate, minutely fur- 

 furaceous toward the base, pallid or whitish, 10-15 cm. long, 2.5 

 cm. thick ; annulus thin, persistent, white. 



Type locality : Mount Gretna, Pennsylvania. 

 Habitat : In thin woods. 



Distribution : Massachusetts, New Jersey, and Pennsylvania. 

 Illustration : Mcllv. Am. Fungi, pi. 94. 



Collected by Mcllvaine in August, 1898. The types at Albany- 

 are in rather bad condition because not properly dried before 

 shipping. Sterling found it at Trenton, New Jersey, and Simon 

 Davis in Massachusetts. 



21. Agaricus echinatus Gunn. Fl. Norv. 2: 125. 1772 



Pileus subfleshy, campanulate to expanded, gregarious or sub- 

 cespitose, 1-3 cm. broad ; surface dry, densely covered with mi- 

 nutely floccose to wart-like or pointed, fuliginous scales; context 

 thin, white, becoming reddish ; lamellae free, narrow, crowded, 

 pink to dark-purplish-red or fuscous; spores ellipsoid, smooth, 



