44 



(S), Amager (Am), Lolland (L), Falster (Yalsi) and Bornholm (B). 

 As to the species of fungi described by Rostrup I have also tried to 

 get information of their distribution in foreign countries. 



THE SYSTEMATICAL ORDER I have used is the same as stated 

 by Engler 6. Prantl: Die naturhchen Pflanzenfamilien, this being 

 the latest work comprising all families of fungi; I have also followed 

 Sydow's Monograph of Puccinia &. Uromyces and, as far as con= 

 cerns the Erysiphacae, E. Salmon's Monograph. I must also men* 

 tion P. Magnus' book on the fungi of Tirol as a work which has 

 been of great use to me because it is as extensive as the present one ; 

 I have only been more at liberty to insert critical and elucidatory 

 remarks than P. Magnus was. 



As to the hostsbound parasites or saprophytes of the particular 

 families, I have arranged them according to the connection of the 

 host^plants, both because closely connected Phanerogams often have 

 closely connected parasitic fungi and because it is always convenient 

 to the general view to have the species of fungi of one genus found 

 on the same host collected in one place. 



The proper place of pleomorphic fungi in such a list may be very 

 disputable; of course not that of Uredinales which are now so well 

 known, but that of all soscalled Fungi imperfecti. I have preferred to 

 collect all the fungi furnished with independent names separately in 

 the same way as Saccardo and Rabenhorst have done, with the 

 exception of the conidial forms belonging to Ustilaginales (Gloeospos 

 rium antherarum, Paipalopsis etc.) and those belonging to Erysiphaceae 

 (Oidium) and Aspergillaceae which I have stated together with the 

 principal species to which they belong. Rostrup often occupied him« 

 self in searching for the proper relation of the higher form of fructi? 

 fication and the fungi imperfecti; and several mycologists are still 

 engaged in finding the hitherto unknown relations. I have made great 

 efforts to find as many reliable statements as possible concerning this 

 matter, thinking, that through analogical forms it might be easy to 

 state to a certain probability whether other connected forms belong 

 to each other or not, when, for instance, a whole series of »species« 

 of Fusicladium have been proved to be conidial forms of species of 

 Venturia it might be rather probable that all "species" of Fusicladium 

 would belong to Venturia. By and by when more and more light is 

 thrown on the biology of those fungi, their systematic arrangement 

 will also be altered; at present the Fungi imperfecti are divided only 

 according to the shape and size of their conidia and perithecia; but 

 the time is not far distant when all those which are stages of devel* 

 opment of pleomorphic species will be arranged only according to 



