41 



NiNG of LUtuna who visited Rostkup in Copenhagen in 1894 and 

 P. NiEi.sFN in Tystofte (see Henning 95), lecturer H. G. Simmons of 

 Lund who occasionally paid visits to Seeland to collect fungi, and 

 Professor, Dr. Jakob Eriksson of Stockholm (see Er. 08 -°). 



Of greater interest than any of the above mentioned were the two 

 visits paid to Rostrup at Skaarup in 1882 &. 1883 by Cart. Johan 

 JoiiANSON. Although Rostrup often enjoyed the honour of receiving 

 proofs of the high estimation of his work in foreign countries, and 

 although he was often permitted to help and guide foreigners, I surely 

 believe that there is no foreigner with whom Rostrup has been so 

 closely connected as with C. J. Johanson. The reason for this must 

 surely be found not only in the exceedingly sympathetic character of 

 Johanson, but also in the fact that he came as a deputy from Sweden 

 to Rostrup to be the first pupil who came to study mycology with 

 Rostrup. 



The visit of Johanson was a great pleasure to Rostrup who then 

 was still living at Skaarup, where he had been botanizing at the same 



places during 23 years and where he had 



,^-;.'' found hundreds of fungi ; but never before 



in a corresponding period Rostrup made 



/ ^'" ' % so many new and interesting observations 



as to mycology as during the T/^ month 



which he spent in constant company with 



Johanson; mostly they made shorter or lon= 



ger excursions, accompanied by Rostrup's 



£ Nj^B son OvE who enjoyed his summer holidays, 



^^^^ '^^^ his daughter Asta and even Mrs. Rostrlip; 



^^^^^k^ . ^B^ every faded leave of grass and every stalk 



^^^^^^^^^r was examined, and often were two or three 



^^^^^^^ species of fungi found on the same leaf; one 



C. ]. loH.'^NsoN. thing is to be seen; how all have recipro^ 



From .1 photo from 188-t. cally animated each other, trying to exceed 



one another in finding new things; during 



those forty days Rostrup was able to state the discovery of ten species 



nova (f. inst. Entyloma hottoniae £k Tuberculina maxima) and at least 



60 species, new to Denmark (f. inst. Giberella vaccinii, Pleospora ty= 



phicola, Thecaphora deformans. Puce, eriophori, Pleospora urticae, 



Sclerospora graminicola, Septoria thecicola). Rostrup and Johanson 



made together an excursion to Jutland where they, by local observa« 



tion, found the genetic relation of two different forms of heteroecious 



fungi. Near Silkeborg (June 20. 1883) they found aecidia on more 



species of Cirsium, and in company with the attacked plants Puccinia 



