■279 



1879 produced '^^h clustercups of Uromyces betae by infection ^^/4 with 

 teleutospores. 



1880 produced Uromyces pisi by infection with aecidiospores on 

 Euphorbia cyparissias, sent by Prof. P. Magnus from Berhn. 



1880 produced ^''/s clustercups on Trifolium repens by sowing (^'A) 



wintered teleutospores of Uromyces trifolii. 

 1880 infected Glaux maritima with teleutospores from Scirpus mari- 



timus (10 years before Plowright). 



Puccinia. 



1871 P. Nielsen produced clustercups on the leaves of Lampsana' by 

 sowing teleutospores from wintered leaves of the same host. 



1874 in July he produced uredo on Lolium perenne by sowing aeci- 

 diospores from Rhamnus catharticus, and the same uredospores, 

 sown on leaves of Avena sativa produced again uredo (see P. 

 N. 75 b ^^° 6.77 a ^\ E. & H. 96 ^s^). 



1874—75 infected Poa annua, triviahs, nemoralis, palustris &. pratensis 

 with aecidiospores from Tussilago and vice versa (see P. N.77a). 



1876 made some experiments with "Aecidium albescens Grev" (see 

 P. N. 77 3"^). 



1877 infected Rumex acetosa in April with teleutospores of Puccinia 

 Trailii Plowr., and vice versa in July (see R 84 a ^°, Klebahn 04'"'). 



1878 — 80 he produced clustercups on Rhamnus cathartica by sowing 

 teleutospores from Avena sativa, Holcus lanatus and Lolium 

 perenne. "Puccinia lolii Nielsen". 



1877—79 infected Calamagrostis lanceolata with aecidiospores from 

 Frangula alnus and vice versa, the same aecidiospores sown on 

 many other gramineae gave no result. "Puccinia calamagrostidis 

 Nielsen" in herbario = Puccinia coronata f. spec, calamagrosti- 

 dis Er. 



1879 he produced Puccinia sonchi st. II on leaves of Sonchus arvensis 

 iS. asper by sowing wintered teleutospores from the same hosts. 



1880 in the same manner uredo of Puccinia absinthii on Artemisia 

 vulgaris and uredo of Puccinia chaerophylli on Anthriscus and 

 uredo of Puccinia bardanae on Lappa tomentosa. 



1880 he produced teleutosori on the leaves of Cirsium heterophyllum 

 by sowing teleutospores of Puccinia criici oleracei and in the 

 same manner produced Puccinia arenariae on Stellaria holostea 

 and Puccinia circaeae on Circaea lutetiana. 



1879 infected Baldingera arundinacea &. var. picta with aecidiospores 

 from Convallaria majalis (12 years before Magnus and Klebahn). 



1879—80 infected Majanthemum, Paris, Convallaria &. Polygonatum 

 with teleutospores from Baldingera arundinacea. 



