332 



S. Boserup, Tjustrup. Ranunculus repens. (Aecidium ranunculi Fl. D. 2216 

 fig. 1). J. Bangsbo (C. H. O.), Skive!; F. Klingstrup, Brsndeskov; Thorseng 

 Vindeby; S. Lyngby!, Herlufsholm. Poa palustris. L. Pederstrup, Stensgaard, 

 Sellested. Poa nemoralis. J. Kolding; S. Jaegerspris (Gad). Poa trivialis com 

 mon. 



P. Nielsen has produced Uromyces poae on Poa annua &. trivialis 

 after sowing of spores of Aecidies of Ranunculus repens (1877 a ^' S. 

 75 b *^'). C. Gad has made the observation in nature that aecidio- 

 spores of Ranunculus ficaria infected Poa trivialis. 



It is very common, but is scarcely of so economical an importance 

 as the preceding one. 



Under the name of Aecidium ranunculacearum de C. were formerly 

 comprised not only the aecidial-stages of both the above species, but 

 also aecidies of numerous other species on the leaves of Ranunculaceae ; 

 here I shall give a schematic summary of the different forms of aeci- 

 dies on the Danish species of Ranunculus: 



On Ranunculus acer Uromyces dactylidis. 



Puccinia perplexans. 

 On Ranunculus bulbosus Uromyces poae on Poa pratensis. 



On Ranunculus bulbosus Uromyces dactylidis. 



Uromyces poae on Poa trivialis &. 



nemoralis. 



Uromyces festucae-ranunculi. 



Puce. Magnusiana. 

 On Ranunculus ficaria Uromyces poae on Poa nemoralis, 



palustris, pratensis, trivialis. 



Uromyces rumicis. 

 On Ranunculus lanuginosus Uromyces dactylidis. 

 On Ranunculus repens Uromyces dactylidis S. poae. 



On Ranunculus polyanthemus Uromyces dactylidis. 



On Ranunculus lingua is found an aecidium whose life-cycle is 

 still unknown. June— July. 



J. Skjellerup (Christensen Hygum); S. Lyngby Mose, Snedinge (P. N.), 

 Lekkende. 



1549. Uromyces gageae Beck, Guldstjernerust (R 04 a '*), Lit: 

 Sydow 10 "\ 



Microuromyces on Gagea. April and May. 



Is often found together with the habitually similar Ustilago ornitho- 

 gah (S. 6. K.). 



Gagea lutea. J. Asmildkloster; F. Ringe!, Langkildegaard, Skaarup "/b 1865, 

 Gudbjerg, Vejstrup; S. Charlottenlund (O. R.), Dronninggaard (F. K. R.), 

 Boserup (Thomsen), 0rsl0v (P. N.), Oringe (Gad). Gagea spathacea. F. Skaarup. 



