335 



According to recent investigations of Fischer (10^^^) this species 

 belongs to a series of species having their aecidia on Euphorbia Ge- 

 rardiana. 



1560. Uromyces betae (Pers.)Lev., Syn: Uredo betae Pers. Syn^^°, 

 Runkelroerust (R 71 "), Bederust (R 82 b ^ 6. 84 h), Lit: Sydow 10224_ 

 P. N. 74 a ">' 6.75 h =««, R 78, 91 m a 93 c ^^; K. H. 05. 



Aut-eu-uromyces. St. I May— June, st. II June— Sept., st. Ill July— 

 Oct. 



St. I appears more rarely, is most commonly found on Beta, which 

 is cultivated for production of seed. Rostrup (02 a ^" c. icon.) states 

 as a supposition that the mycelium should winter in the heart (termi- 

 nal bud) of the host. For this reason Rostrup also proposes (92 c) to 

 prevent the spreading of the fungus by picking of the easily percep- 

 tible leaves, infected by aecidies, in spring. This fungus was first 

 found in this country at Skaarup ^*/io 1869. As early as in 1874 it was 

 very common and did perceptible harm; later on it has often been 

 looked for in vain (R. 78.). 



Beta mariHma. S. Saltbaek Vig (Holm), Refsnss (Exc. "/e 00), Lyngby (K. 

 H. R. 94 f ''■'). Beta vulgaris &. hortensis common. 



1561. Uromyces geranii (de C.) Otth., Syd. 10^'°, Storkenaebrust 

 (R 04 a '0- 



Aut-eu-uromyces. St. I June, st. II July— Sept., st. Ill August— Oct. 



Geranium palustre. S. Jjegersborg, Lellinge (R 91 i & 92 g^^), Lekkende, 

 Vintersballe (Jeppesen); L. Knuthenborg ^/s 1881; Falst. Hanenov. Geranium 

 pratense. J. Randers!; F. Akkerup!, Skaarup (R 92 g '^, Sydow. Uredineen no 

 2152). Geranium silvaticum. J. Hald Langskov!, Hinnerup, Laasbyl; B. R0, 

 Almindingen (R 92 g ^1). 



1562. Uromyces Kabatianus Bubak, Sydow 10 "^ 



Rostrup reports (1892 g''^) that he has found Uromyces geranii 

 de C. in great numbers on Geranium pyrenaicum near Frederiksvaerk 

 1890. "In places where almost every specimen of this plant was attacked 

 by the rust other Geranii which are not else inhabited by this fungus 

 were infected by it. In such places I found the said Uromyces geranii 

 on Geranium pusillum and on Geranium moUe <S^ dissectum as well." 



Later on this Uromyces on Geranium pyrenaicum has been diffe- 

 rentiated from the common Uromyces geranii by Bubak (Vgr. 1902 ^^^) 

 and called Uromyces Kabatianus. 



Nowhere in literature do I find, however, definite statements that 

 either Urom. geranii or Urom. Kabatianus has been found on those 

 three host-plants. In the defile passing Fuglevad mill at Lyngby I 

 have found Geranium pyrenaicum severely attacked by Uromyces 

 Kabatianus, and on the specimens of Geranium columbinum, dissec- 



