Murrill: Agaricaceae of Tropical North America 17 



Santiago de las Vegas, Cuba, Earle 32, 48 ; Utuado, Porto 

 Rico, Mrs. Britton & Miss Marble 1210; Castleton Gardens, 

 Jamaica, Murrill 131; Mooretown, Jamaica, Murrill 137, 157; 

 Sir John Peak, Jamaica, Murrill 798 ; British Honduras, Peck; 

 Jalapa, Mexico, Murrill 97; Orizaba, Mexico, Murrill 850; 

 Motzorongo, Mexico, Murrill 1060; Xuchiles, Mexico, Murrill 

 1129. 



2. Deconica (W. G. Sm.) Sacc. Syll. Fung. 5: 1058. 1887 



This is a very small genus, separated from Psilocybe as a 

 subgenus by W. G. Smith in 1870, because of its decurrent 

 lamellae, and raised to generic rank by Saccardo in 1887. There 

 are only two tropical North American species, both occurring on 

 manure. 



-Pileus 2 cm. broad; spores 12 fi long. 1. D. bullacea. 



Pileus 0.5 cm. broad ; spores 7 fi long. 2. D. scatigena. 



1. Deconica bullacea (Bull.) Sacc. Syll. Fung. 5: 1058. 1887 

 Agaricus bullae eus Bull. Herb. Fr. pi. 566, f. 2\ hyponym. 1791 ; 



Pers. Syn. Fung. 412. 1801. 



This species was first figured by Bulliard from specimens col- 

 lected in France. While probably widely distributed, it has not 

 often been reported from this country. The spores of excellent 

 specimens collected in Jamaica are ovoid, smooth, opaque, um- 

 brinous by transmitted light under the microscope, 11-12 X 6-8 p. 

 Authentic specimens from Bresadola agree in every particular. 

 The following collections were all made on horse manure in 

 pastures and roads. 



Jalapa, Mexico, IV. A. & Edna L. Murrill 29; Cordoba, 

 Mexico, W. A. & Edna L. Murrill 887; Santiago de las Vegas, 

 Cuba, Earle 62 } 84 ; Halls Delight, Jamaica, Earle 117 ; Cinchona, 

 Jamaica, W. A. & Edna L. Murrill 508, 531 ; Grenada, Broadway. 



2. Deconica scatigena (Berk. & Curt.) Sacc. Syll. Fung. 5: 



1058. 1887 



Agaricus scatigenus Berk. & Curt. Jour. Linn. Soc. 10: 292. 

 1868. 



