ENUMERATION OF THE FUNGI OF ICELAND 
In the following list of fungi now known from Iceland the 
classification is founded on the system given by Ernst Gäumann 
in his work: Vergleichende Morphologie der Pilze, Jena 1926. 
The following abbreviations are used for the names of the collec- 
tors of fungi most frequently named in the list: 
D. = Olafur Davidsson. 
J = Helgi Jønsson. 
ÆRES Poul Larsen. 
H.0. = C. H. Ostenfeld. 
St. — Stefån Stefånsson. 
When a species has been collected in several localities, these 
are, as far as possible, arranged according to their distribution in 
the following succession: East-, North-, North-West-, West- and 
South-Iceland (comp. J. Boye Petersen, this work, Vol. II, part II, 
p- 259). 
The designations in the descriptions of the Agaricacee consisting 
of a letter and a figure, e. g. g 4, refer to the colour plate accom- 
panying this paper; it has been painted by Mr. Jakob E. Lange 
for his paper, Studies in the Agarics of Denmark, Part VI (Dansk 
Botanisk Arkiv, Bd. 4, Nr. 12, 1926), and reprinted here with the 
consent of the author. 
MYXOMYCETES. 
Clathroptychiaceae. 
Enteridium Ehrenberg. 
1. E. olivaceum Ehrenberg, Jahrbücher für Gewächskunde, heraus- 
gegeben von Sprengel, Schrader und Link, Bd.1, Heft. 2, p. 55. 
Hüsafellsskögur (O. D). — On birch wood. 
