113 
Mykologiska Notiser, 
II. Fusarium viticola Thüm. infecting peas. 
By Göte Turesson. 
Although diseases due to different species of Fu- 
sarium are no doubt common in Sweden and are destruc- 
tive to various crops, very little has yet been done in 
this country to obtain conclusive proofs as to the fre- 
quency and distribution of these diseases. Recently, 
however, attention has been drawn to such diseases as 
foot-diseases and seedling blight (»snow mould disease») 
on cereals, and it is to be hoped that we shall soon 
have a complete account of these diseases, which in 
some years seriously injure the crops of this country. 
N There are, however, a number of fusarioses in other 
plants of economic importance, which call for investi- 
gation. Both vegetables and decorative plants have 
been found to suffer from attacks by different species 
of Fusarium in our district. In 1918 some of the pro- 
blems met with were taken up. The present paper 
aims at describing a fusariose in peas which has been 
hithertho overlooked. I am indebted to Professor H. 
Nilssox-Ehle for permission to use different varieties 
of garden-peas growing on the experimental fields at 
Svalöv, where this disease caused great loss in 1918. 
Although additional field and laboratory work remains 
to be done before a complete understanding of the disease 
is arrived at, it has seemed advisable to publish at 
this stage the main facts already obtained. 
1. Fusaria previously known to infect peas. 
Among the species belonging to the genus Fusarium 
only a few are known to infect peas. The first re- 
cord of such an infection was made by van Hall in 
1903(2). The disease known in Holland under the name 
of St. John’s disease (» Sankt- Johanniskrankheit ») wor- 
Botaniska Notiser 1920. 8 
