by exchange are found in another herbarium completely separated 

 from the Danish herbarium. 



RosTRUP very soon came to occupy the position of leader of the 

 mycological investigations of Denmark, a position formerly held by 

 Kylling and the various editors of Flora Danica as far as concerns 

 all the Danish plants. All finders of fungi sent information of them 

 and specimens for his herbarium to Rostrup. Below I have stated the 

 names of most of those who sent fungi for the Danish collection. 



In this manner Rostrup's herbarium was an unwritten list of all 

 fungi found in Denmark within the groups of fungi in which he 

 was interested. Agaricaceae which are difficult to keep in dry con* 

 dition practically form a group of fungi which most frequently has 

 its own lovers; the mycologists occupying themselves with Agaricaceae 

 are generally not interested in other fungi and vice versa. Saccharoj: 

 MYCETES, MucoRACEAE and the submerged Phycomycetes are groups 

 which, from a systematical point of view, belong to the fungi but 

 are subjects for practically special studies which are seldom combined 

 with the study of other fungi, while many scientists do not recon 

 MYXOMYCETES, LiCHENS and ScHizoMYCETES among the real fungi. There* 

 fore these groups are quite or partly omitted in this account of Ro* 

 STRUP's fungi; fortunately they have been discussed separately by 

 others the Agaricaceae by Severin Petersen (1907), the submerged 

 Phycomycetes by Henning Petersen (1905 &. 1909), the Myxomycetes 

 by C. Raunki^r (1888), the Lichens by Rostrup and Deichmann 

 Branth (1869) and the Saccharomycetes by E. C. Hansen and seve* 

 ral others. The result of Rostrup's indefatigable efforts through fifty 

 years to collect and revise material of the knowledge of the localities 

 of the Danish fungi is that Denmark is, at present, one of the best 

 investigated countries of the world. As the number of Phanerogams 

 in this country is poor (c. 1400 species) compared to that of other 

 countries (f. inst. mountainous countries as Switzerland) it was not to 

 be expected that any large number of fungi should be found in Den* 

 mark. The small extention of the country (about 39,000 n*km.) will 

 of course facilitate the investigation very' much; the principal thing 

 is, however, that the country possesses men who with energy and 

 skill will work for its investigation. Through the work of Rostrup 

 and his assistents the presence of so great a number of fungi has been 

 proved in this country that only a few parts of Germany (Branden* 

 BURG, Silesia, Bavaria), Switzerland, Tyrol and the north of Italy 

 may claim to have hardly as thorough an investigation. 



After the death of Rostrup on January 16. 1907 a fine monument 

 was erected in his honour in the garden of the Vet* 6. Agricult. Col* 

 lege. His biography is to be found in many places, especially to be 



