206 MANUAL OF FRUIT DISEASES 
Stewart, F. C., and Blodgett, F. H. A fruit-disease survey of the 
Hudson Valley in 1899. Currant diseases. Leaf spot. New 
York (Geneva) Agr. Exp. Sta. Bul. 167 : 291-292. 1899. 
Stone, R. E. The perfect stage of Septoria Ribis. Phytopath. 6: 
109. 1916. ; 
ANTHRACNOSE 
Caused by Pseudopeziza Ribis Klebahn 
This is a disease which appears to some extent every year, 
and only occasionally does it become epiphytotic. In New 
York it was serious in 1889 and 1901, and is one of the most 
common fungous diseases of the currant in Oregon. The trouble 
is known throughout the United States and Europe. It is 
also reported from Asia and Australia. Its origin is unknown, 
but the first mention of it in America comes from Connecticut, 
having been found there on black currants in 1873. Subse- 
quently it was discovered in the Adirondack Mountains on the 
fetid currant, in Iowa on the red currant, and is now known to 
affect several other kinds of currants — both red and white. 
Gooseberries are also subject to the disease. 
The injury from anthracnose, also known as leaf-spot and 
leaf-blight, comes from its effect upon the leaves and fruit. 
Plants are known to have been completely defoliated by July 
10, and a loss of one-half to two-thirds of the crop of fruit is 
on record. This early defoliation interferes with the proper 
ripening of the wood and the formation of fruit-buds for the 
next year. The disease also affects unfavorably the quality 
of currants for wine. Old plantations are said to suffer more 
than young ones, yet the disease is of considerable importance 
in the nursery. In the nursery older bushes usually suffer 
more than the first-year cuttings, due perhaps to the fact that 
the young cuttings are planted on ground which is not ordinarily 
used for currants and gooseberries. Cuttings in close proximity, 
however, to the older diseased bushes are very likely to become 
