Murrill: Agaricaceae of Tropical North America 195 



brous, white, with a tough rind, 4 cm. long, 7 mm. thick, abruptly 

 bulbous at the base as in some species of Clitocybe and Cortinarius. 



Type collected on rich soil in a moist virgin forest near Jalapa, 

 Mexico, December 12-20, 1909, W. A. & Edna L. Murrill 85. 



Doubtful Species 



Agaricus (Tricholoma) sordidus Fries, Epicr. Myc. 53. 1838. 

 Reported from St. Thomas by Fries in Nova Acta Soc. Sci. 

 Upsal. III. 1 : 23. 185 1, who identified one of Oersted's collections 

 as this species. No trace of the specimens in question were found 

 in Europe. 



5. Hydrocybe (Fries) Karst. Hattsv. 233. 1879 



This genus, usually known as Hygrophorus, contains many 

 brilliantly colored members in temperate regions, some of the 

 commonest of which were described and illustrated in Myco- 

 logia for July, 1 910. 



1. Hydrocybe albo-umbonata sp. nov. 



Pileus conic, with long cylindric umbo, solitary, 2.5 cm. broad, 

 nearly 2 cm. high ; surface smooth, glabrous, moist, white ; lamellae 

 broad, ventricose, thin, white ; spores subglobose, smooth, hyaline, 

 5-7 /x ; stipe curved, terete, equal, glabrous, moist, white, 5 cm. 

 long, 2 mm. thick. 



Type collected on the ground in woods at New Haven Gap, 

 Jamaica, 5,600 ft. elevation, January 4, 1909, W. A. & Edna L. 

 Murrill 764. 



2. Hydrocybe aurantia sp. nov. 



Pileus obconic, small, solitary, 1.5 cm. broad; surface smooth 

 or slightly striate, glabrous, dry or moist, aurantiacous, lamellae 

 adnate, rather broad and distant, subconcolorous ; spores globose, 

 smooth, hyaline, 3-5 fi ; stipe slightly tapering downward, glabrous, 

 aurantiacous, pruinose at the apex, 2.5 cm. long, about 2 mm. thick. 



Type collected on the ground in woods at Morce's Gap, Jamaica, 

 5,000 ft. elevation, December 29, 30, January 2, 1908-9, W. A. & 

 Edna L. Murrill 743. 



