12 Eumycetes. 



late Mr. E. Rostrup during the many years in which he was 

 engaged in the study of Danish fungi; it is published in English in 

 Order to make all the valuable observations oJ' Rostrup more acces- 

 sible to foreigners. The large number of fungi recorded in the pre- 

 sent list, altogether 3324 species (Jgaricaceae excepted), bear witness 

 that Denmark, through the investigations of Rostrup and others, 

 is one of the most thoroughly investigated countries in Europe. 

 especially when its small extent is regarded iabout 39000 km- with 

 about 1400 species of Phanerogames). Of Phycomycetes 133 species 

 are mentioned, of AscotJiycetes 1112, of Ustilagineae 97, of Uredi- 

 nales 271 and of the other Easidiomycetes 743. 



In the first part of the book a Statement is given of the earlier 

 Danish mycologists and also of a number of pupils of Rostrup in 

 the mycological investigation of Denmark; for instance O.E. Müller, 

 Fabricius, Holmskjold, Schumacher, A. S. Oersted and the 

 Swedish m^'cologist C. J. Johanson, avo studied with Rostrup, 

 are mentioned an portrayed. 



In the second part a systematic list of all fungi, hitherto found 

 in Denmark, is published, only the Agaricaceae have not been 

 included. The descriptions of the more common species are leftout, 

 but numerous references to recent authors, information on the 

 biology of the fungi, exact Statements of the substratum on which 

 they were found and their relation to their host-plants are given, 

 as also the season in which they are to be found and, as to a num- 

 ber of species, the year in which the}^ were first found in Den- 

 mark. As to the critical and biological notes and revisions of the 

 separate species I beg lo refer to the book itself, here I sball onl}' 

 mention a few details of more general interest. 



As early as 1885 Rostrup proved that the deformations of 

 flower and leaves of Anemone nemorcsa, which Klebahn and 

 Lindau maintain to be due to Trichodytes anemones Kleb, are 

 caused by Physodernia deformans Rostrup. 



The genus Sclerotinia is to be divided into two quite different 

 subgenera: Stromatinia and Eiisclerotinia . The species belonging to 

 the first one are able to produce Monilia and quite accidentall5' 

 ascomata. The species of Euscleroiinia produce regularly ascomata, 

 but quite accidentally a conidial fructification, called Sphacelia, but 

 never Monilia. It is wrong to classifj" Sclerotinia ahn Maul, S. be- 

 iidae VVor. and S. psendotuberosa (Rehm) under Stromatinia onh" 

 because they are found in the fruits of the host-plants. 5. Ftickeliana 

 (de By) is a true Eu Sclerotinia , its Sclerotium being Sclerotium echi- 

 natiini Fuckel on the dead leaves of Vitis vinifera. It has no genetic 

 relation whatever to Botrytis cinerea Fries, which produces Sclero- 

 tium durum Fries, and it has never been proved by incontroversible 

 culture experiments that any form of Botrytis corresponds to an\'' 

 species of Sclerotinia. 



New species: Cudoniella minima on Dicranum, Leptosphaeria 

 occulta on dead leaves of Carex hirta, Pleospora Lycopodii on dead 

 leaves of Lycopodiuni clavatum, Diatrypella Abietis od dead bark of 

 Abies alba, Uredo Glyceriae on leaves of Glyceria maritima, Apo- 

 sphaeria Sequoiae on dead leaves of Sequoia gigantea, Sphaeroriema 

 Pseudoplata^ii on fallen leaves of Acer ps., Ascochyta Rhododendri 

 on dead leaves of Rhododendron , Septoria Oxalidis on living leaves 

 of Oxalis acetosella, Leptothyrium Chimophilae on leaves of Chimo- 

 phila umbellata. Melasniia myriocarpa on living leaves ofPo/v^owwwz 

 convolvulus, Marssoniiia Forsythiae on living leaves of Forsythia 



