212 



Mycologia 



squamose, bay-brown or brownish; margin extending beyond the 

 lamellae and appendiculate from the remains of the veil; context 

 whitish or grayish-white, unchanging, with an agreeable taste, edi- 

 ble ; lamellae crowded, rounded behind, free, but reaching the stipe, 

 at first whitish, then reddish-pink, finally brown; spores broadly 

 ellipsoid or subglobose, 6-8 x 4-6^; stipe short, silky, stuffed or 

 hollow, whitish, then reddish, and finally brown, 2.5-4 cm. long, 

 6-16 mm. thick; annulus thick, of a soft, felty texture, persistent, 

 whitish, often, striate on the upper surface with impressions of the 

 edges of the lamellae. 



Type locality : East Cambridge, Massachusetts. 

 Habitat : In dump ground on deposits of manure and street 

 scrapings. 



Distribution : Vicinity of Cambridge, Massachusetts. 



Several good specimens are at Albany, including the types col- 

 lected by Miss Helen Noyes. See Peck's description for long and 

 interesting notes. My A. campester hortensis, described and fig- 

 ured in Mycologia for July, 191 4, seems very near this species. 

 The spores are very broadly ellipsoid to subglobose, smooth, pale- 

 purplish-brown under the microscope, about 7 x 5ft; appearing 

 broader and quite different from those of typical A. campester. 

 The lamellae of my plant, also, are not so pink as those of the 

 common mushroom. 



19. Agaricus halophilus Peck, Bull. N. Y. State Mus. 94: 36. 



1905 



Agaricus maritimus Peck, Bull. Torrey Club 26: 66. 1899; not 

 A. maritimus Fries, 1818. 



Pileus very fleshy, firm, at first subglobose, then broadly convex 

 or nearly plane, 5-20 cm. broad ; surface glabrous, sometimes 

 slightly squamose with appressed spot-like scales, white becoming 

 dingy or grayish-brown when old ; context whitish, quickly redden- 

 ing when cut, edible, with an agreeable taste and a distinct odor, 

 suggestive of the odors of the seashore; lamellae narrow, crowded, 

 free, pinkish becoming purplish-brown with age, white on the 

 edges ; spores broadly ellipsoid, purplish-brown, 7-8 x 5-6 ^ ; stipe 

 short, stout, firm, solid, equal, sometimes bulbous, white, 2.5-5 cm - 

 long, 1.5-2.5 cm. thick; annulus delicate, slight, and easily obliter- 

 ated. 



