360 ATKINSON— GALERULA IN NORTH AMERICA. 



This structural study of the genus Galernla in North America is 

 based on an examination of material collected by myself during many 

 years in this country and in Europe. The latter material was col- 

 lected principally in Sweden and France. The determinations were 

 confirmed or made by Dr. Robert Fries, son of Elias Fries for the 

 species from Sweden, and by E. Boudier for the species from 

 France. Through the courtesy of the State Botanist, Dr. H. D. 

 House, I have had the opportunity of examining Dr. Peck's types in 

 the State Museum at Albany. Through the courtesy of Dr. N. L. 

 Britton, director of the New York Botanical Garden, and Dr. W. A. 

 Murrill, I have examined also nearly all of the types in the Her- 

 barium of the N. Y. Bot. Gard., and some European species. 



There are 58 species from North America in the following 

 .synopsis. 



SYNOPSIS OF THE SPECIES. 



PiLEUS HOMOGENEOUS. 



Cystidia flask-shaped-lanceoloid-fusoid. 



Cystidia on sides and edges of lamellce. 



I. 



Galerula besseyi (Pk.) Murr. N. Am. Fl. 10, 163, 1917. 



Galera besseyi Peck, N. Y. State Mus. Bull. 131, 35, pi. 5, figs. 15-20, 

 1909. 

 Nebraska. 



Galerula hypnorum (Fr. emend. Pat.) Atkinson, 



Agaricus {Galera) hypnorum Fr. ex Schrank. Syst. Myc. i: 267, 



1821. 

 Galera hypnorum Quelet Champ. Jura et Vosges, i: 137, 1872; 



Emend Patouillard, Tab. analyt. Fung, i: 103, fig. 230, 1884. 

 Galerula hypni Murr. pr. pte. N. Am. Fl. 10: 163, 1917. 

 Galerula refiexa Murr. N. Am. Fl. 10: 169, 1917. 



Oregon, Mexico, Europe. 



Galerula muricellospora nov. sp. Gregaria vel solitaria: 4-7 



cm. alta : pileo campanulato, interdum convexo, hygrophano, striate. 



