X PREFACE. 



Sylloge Fungorum for example, in Winter's Die Pilze Deutschlands, P. A. Karsten's 

 Mycologia Fennica, and Fries' more important publications, which latter must always 

 be indispensable ; books also of descriptive lichenology must be consulted. The 

 new edition of Leunis' Synopsis by A. B. Frank, and in its special line Frank's Pflan- 

 zenpathologie, are works to be recommended to the student. I must not be supposed 

 to express an unfavourable opinion of other works because I do not mention 

 them; my only purpose is to point out some books which will be of service- 

 to those who require direction in their reading. 



I have endeavoured to make myself as well acquainted as was possible with the 

 special literature of my subject and to draw it into my service. I have made some 

 use even of publications which appeared at the close of the year 1883 and the 

 beginning of 1884 while my book was being printed. That some particulars have 

 been omitted altogether, or been forgotten for the moment in the preparation of some 

 of the sections, is what I should have expected beforehand, even if I had not 

 subsequently noticed their omission. I must plead in excuse the extraordinarily large 

 number of mycological communications of every possible size which have been 

 published during the last twenty years. 



The number of publications on the Fungi is so large that it was impossible to 

 quote them all, and to have done so would have transgressed the limits of practical 

 utility. The more important references given in the text will in every case show 

 where further details are to be obtained, especially with the assistance of Hoffmann's 

 Mycologische Berichte from 1865 to 1872, and Just's Jahresbericht, which has 

 appeared regularly since 1873. Special notices of the literature of the subject will be 

 found in the separate sections of the work. 



The illustrations are for the most part the same as those in the earlier work. A 

 certain number are new and drawn by myself; a smaller portion have been taken 

 from other authors whose names are in every case given in the explanations appended 

 to the figures. I express my warmest thanks for the permission to use these 

 illustrations, and no less warm thanks to all those who have lightened my labours by 

 their communications and by assistance of other kinds. 



A. DE BARY. 

 STRASSBURG: June 30, 1884. 



