288 TWENTY-FIRST KEPORT. 



makes it less valuable for many who consult it. Then opiniim.s as to the limits 

 of families and genera are constantly changing, changes that are hard to 

 reflect in such a work extending over a period of more than thirty years. 

 Accordingly we lind that specialists have mad(! close studies of orders, families, 

 genera, or even small groups of critical species, examining all the available 

 specimens, particularly where possible, the specimens in the hands of the 

 original describer of each species. From these are drawn up new descriptions, 

 all based upon the same comparative structures, often illustrated copiously 

 and usually accompanied by new keys, careful reduction of synonyms, etc. 

 (^ould the literature of such studies be made easily accessible to students it 

 would make the identitication of fungi far easier, at least in some groups. 



The need for a list that would refer one to tliese monographs and minor 

 studies as well as to other works in other languages than Latin that might, 

 in part, take the place of Saccardo. led the writer some time ago to begin 

 the pj-eparation of such a bibliography. The present very incomplete list is 

 the outcome of this attempt to supply this need. It must not be looked upon 

 as an attempt to produce a complete I)ibliography of systematic mycology; 

 that would take a book half as large as Lindau's Thesaurus. The following 

 have been the aims in preparing the list: 



First in the list come the general works covering the whole field of. syste- 

 matic mycology, such as Saccardo, Engler and Prantl, etc. It has been 

 attempted for these, as well as for the smaller more special publications, to 

 list two or more, so that in case one is unavailable another may be consulted. 

 Where a work consists of more than one volume, the main groups of fungi 

 treated of in each volume are indicated. Following next are the names of 

 smaller works, still covering all of the nmin groups of fungi, but not so exten- 

 sive in their scope; as well as host indices, etc. 



Tbe greater part of the list is dcvotcil (o llic spc(i;il iiKuiographs and 

 studies of limited groups of fungi. No attempt is inadf to cover the older 

 litei'ature; with a few exceptions, only those .special studies are noticed that 

 have appeared since the first volume of Saccardo saw light. In case of .several 

 papers of moi'e or less monographic nature upon the same group of fungi two 

 or three are usually mentioned, but a partial attempt has been made to indi- 

 cate l)y position which is the more complete or most helpful. Thus of two 

 or three papers cited, usually the first one mentioned is considered as the 

 most desirable, in whose absence, however, one should consult one of the others. 

 In case, however, one monograph covers a larger geographical area that is 

 placed first. 



Where a group of fungi is not found in the list of titles it is an indication 

 that no I'iihly recent studies on that group are known to the compiler of this 

 list. Ill that case, tiic student has no choice but (o go to Uie general works, 

 found at (lie liead of the list. 



