289 



(Jargen Paulsen), Buddinge, 0rsl0v (P. N.). Ribes nigrum. J. Bratskov near 

 Broust (J. Kjeldsen); F. Holmdrup; S. Praestevaenget (C. H. O.), Orslev (P. 

 N.). Ribes alpinum. F. Skaarup ; Maens Klint C^/e 77 H. M. and again ^^/e 

 93 E. R.). Salix viminalis very common. 



Caeoma laricis is a common name of all forms of caeoma found 

 on the leaves of Larix in May-June. It is impossible, except by cul- 

 tivating experiments, to tell to which species of Melampsora they be- 

 long. The following possibilities may be mentioned (see Kleb. 05 &. 

 R02a="): 



Mel. larici-pentandrae Kleb. st. II— III on Salix cuspidata, fragilis, 

 pentandra. 



Mel. larici-caprearum Kleb. st. II— III Salix caprea. 



Mel. larici-daphnoides Kleb. st. II— III Salix acutifolia, daphnoides. 



Mel. larici-epitea Kleb. st. II— III Salix aurita, cinerea, viminalis X 

 hippophaefolia, caprea. 



Mel. larici-popuhna Kleb. st. II— III Populus nigra, balsamifera, ca- 

 nadensis. 



Mel. larici-tremulae Kleb. Syn: Mel. laricis Hartig (R 84 d^^" 6. 90 

 a ^°°). Populus tremula, alba, alba X tremula. 



Caeoma, in May, is certainly quite common, but very inconspicuous, 

 noticed on: 



Larix decidua F. Skelmose, Broholm, Vejstrupgaard, Svenborg; S. 

 Tisvilde. Larix americana. F. Tange Skov ("/e 81). 



1364. Melampsora salicina Desm., Syn: Uredo farinosa Pers. 

 Schum. no 1536, Melet Brandstav (H. 37 ^°^), Pilerust (R 02 a ='" &. 04 

 a ^2). 



It is also necessary that the species of Melampsora on the leaves of 

 Salix should be listed summarily; at present it is quite impossible to 

 classify every separate specimen under its proper species. 



Salix acutifolia, alba, alba X amygdalina, alba X fragilis, amygdalina X vi- 

 minalis, aurita, bicolor, bicolor X caprea, caprea, caprea X viminalis, cinerea, 

 cinerea X viminalis, fragilis X pentandra, hasfata, nigricans, pentandra, plicata, 

 purpurea, purpurea X viminalis, Schraderiana, Schmithiana, very common. 



1365. Melampsora populina (Pers.) Lev., Syn: Uredo popuhna 

 Pers. Syn. "^^ Schum. no 1539, Poppelens Brandstev (H. 37 ^°=), Pop- 

 pelrust (R 04 a '^y 



Mel. populina is like Mel. salicina a common name for a series of 

 species for which it is, at present, very difficult to determine the de- 

 finite limit. 



On Populus deltoides, italica, nigra, very common. 



1366. Melampsora aeoidioides (de C.) Schroeter, R 02 a '^^^. 

 This is a species which Schroeter and Rostrup have separated from 



J, Lind : Danish fungi. 19 



