454 POUL LARSEN 
nus and B. luteus (see note on this subject in the succeeding main 
list of Icelandic fungi). 
In 1876 the Danish botanist Chr. Grønlund made a journey 
in Iceland and collected, in addition to other plants, 24 species of 
fungi. A list of these is given in his paper (14). 
In 1885 E. Rostrup published in Botanisk Tidsskrift (15) the 
results of a critical comparison of all the lists of Icelandic fungi 
hitherto issued, together with a number of Micromycetes which he 
had found on flowering plants in Icelandic herbaria. The number of 
known species of Icelandic fungi was thus brought up to 89. 
In the period 1889—1903 our knowledge of Icelandic fungi 
was considerably extended. Simultaneously with E. Rostrup’s »Is- 
lands Svampe« 1885, appeared C. J. Johanson’s »Svampar fran 
Island« (16), containing 57 species, 31 of which were new for 
Iceland. — In addition a large material was sent to the Botanical 
Museum at Copenhagen and to E. Rostrup personally, consisting 
partly of herbaria of Phanerogams, from which Rostrup gathered 
a rich harvest of Micromycetes, and partly of collections of fungi. 
The Icelanders, Dr. phil. Helgi Jönsson, Dr. phil. Th. Thorodd- 
sen, Stefan Stefänsson, and cand. Olafur Davidsson sent con- 
siderable collections of fungi to Rostrup during this period. This 
applies especially to Olafur Davidsson, who sent in about 400 
species during the period 1885—1903. — Also Danish botanists, 
e.g. Dr. C. H. Ostenfeld and Arthur Feddersen, brought home 
collections of fungi from journeys to Iceland. 
From these collections in conjunction with the results of con- 
tinued investigations of herbaria of flowering plants from Iceland, 
E. Rostrup worked up a new list of the fungi of Iceland in 1903 (17), 
which comprised 543 species, including all species from previously 
published lists of fungi from Iceland. 
From the period after 1903 we have still another list — though 
not a very comprehensive one — in a manuscript from the hand 
of E. Rostrup in the Botanical Museum of Copenhagen (18). It con- 
tains some species of fungi, not previously recorded from Iceland, 
collected and sent in by Helgi Jonsson, 0. Davidsson, and Pro- 
fessor C. V. Prytz. This brings to an end the considerable work 
done by E. Rostrup on the fungi of Iceland (1905). 
The material since then sent in to the Botanical Museum of 
Copenhagen by Helgi Jönsson has been determined by the myco- 
logists J. Lind and Professor C. Ferdinandsen. Of Danish bota- 
