Murrill: Agaricaceae of Tropical North America 77 



Patouillard reports it from Brazil and Guadeloupe and Leveille 

 from Mexico, while specimens from Santo Domingo were so 

 labeled by Berkeley at Kew. Two collections were recently 

 brought in from Bermuda, which is not altogether tropical terri- 

 tory, by Brown, Britton & Seaver 1390, 1513. Some of the 

 numerous varieties of this species may well occur in heavily 

 manured cultivated ground in tropical regions. A note made by 

 me at Hope Gardens, Jamaica, January 9, 1909, reads, as follows: 

 "A. campester on the lawns in Hope Gardens very abundant last 

 week, according to Mr. Harris, but invariably small." 



8. Agaricus pratensis Scop. Fl. Carn. ed. 2. 2 : 419. 1772 



Agaricus arvensis SchaefT. Fung. Bavar. 4: 73. pi. 310, 311. 

 1774. 



The horse mushroom is abundant in temperate regions, where 

 it is extensively collected for food. Patouillard has it in his her- 

 barium from Oaxtepec, Mexico, collected by Paul Maury. There 

 are at hand two recent collections from Bermuda by Brown, 

 Britton & Seaver 1347, 151 2. See A. sub pratensis. 



9. Agaricus subpratensis sp. no v. 



Pileus globose to convex, very thick and fleshy, growing in 

 large circles, reaching 10 cm. or more broad ; surface dry, white, 

 cottony, with scattered, brownish, imbricate scales ; margin white, 

 thick ; lamellae free, crowded, rather narrow, pink to blackish- 

 brown ; spores broadly ovoid, smooth, conspicuously obliquely 

 papillate at the base, with a very large nucleus, purplish-brown 

 with a slightly yellowish tint under the microscope, 8 X 5 /"< ; stipe 

 short, thick, tapering upward from a swollen base, white, fibril- 

 lose, solid, 5-8 cm. long, 2 cm. or more thick; annulus thick, 

 membranous, white, persistent, attached near the apex of the 

 stipe. 



Type collected on the golf links at Constant Spring Hotel, 

 Kingston, Jamaica, January 9-10, 1909, W. A. Murrill 824. 

 Known only from the type locality. This species resembles A. 

 pratensis both in appearance and habit but is conspicuously 

 squamulose and has a shorter stipe. 



