ceae of autumn, but also Lycoperdon, Boletus etc.; on his return 

 home he tried to determine the species by means of the literature found 

 in the Skaarup Training School viz. Schumacher's Enumeratio, Horne= 

 mann's Plantelaere II (Botany) and fragments of the mycological works 

 of El. Fries, but in his diary he complains of the difficulty of obtai* 

 ning accurate information from these sources. With his usual sense for 

 order and thoroughness he began, on that very day, to jot down 

 accounts of all his discoveries and observations in special mycolo* 

 gical diaries which he continued to keep in the same unaltered shape 

 and in the same style until his death, in January 1907, or during more 

 than 46 years. 



I have emphasized the above statement concerning the diaries as it 

 clearly shows that Rostrup began his study of fungi as a mere self? 

 taught man he had no teacher, no guide ; nor did he obtain his interest 

 in the fungi through books; it was the fungi themselves in the open 

 which called him. Whether they were eatable or not was, without 

 doubt, of no interest to him, but they posessed another quality which 

 soon claimed all his attention, it was the injury they — as parasites 

 — might cause to living plants. He himself writes about this (R 85 

 h "^y. "As I have always, if possible, tried to combine my scientific 

 researches with useful objects I was soon, by the said studies, lead to 

 researches of the relation of parasitic fungi to diseases of plants a 

 subject in which later on I have always interested myself from choice." 



The first mycological article written by Rostrup on cultivation of 

 sderotia was merely of a systematic character later on the pathological 

 subjects became predominant. He was simply forced by practical plant;: 

 growers to occupy himself more with the phytopathology. As, in 1870, 

 he had published a short account of the diseases of fieldsplants he 

 received numerous inquiries concerning this subject; in 1876 he also 

 wrote about the diseases of horticultural plants and, in 1878, about 

 those of the forest^trees, and accordingly horticulturists and foresters 

 now applied to him. In this manner he obtained several parasitic fungi 

 for his herbarium, but it also involved his giving up his position as 

 teacher at the Skaarup Training School. He went to Copenhagen 

 where the offices as lecturer of phytopathology at the Royal Veterinar 

 and Agricultural College and Chief Consulting Pathologist were estas 

 blished for him in particular. In these capacities Rostrup was active 

 till he died; and he was exceedingly useful to all branches of work 

 with which he came in contact on account of his great knowledge, 

 his reliable friendship and kindness to all who sought his advice, and 

 the great zeal with which he tried to let all who desired it benefit 

 from his useful knowledge by publications, lectures, letters, exhibitions 

 etc. Everyone applied to Rostrup for advice; his huge collection of 



