SECTION OF VEGETABLE PATHOLOGY. 857 
i 
not be practical, or, rather, it may not pay to attempt any treatment 
unless the disease should become more injurious than it appears to 
be at present. 
7,—ANTHRACNOSE* OF THE RASPBERRY AND BLACKBERRY. 
Gleeosporium venetum, Speg. 
(Plate V.) 
(a) HISTORY OF THE FUNGUS. 
In the Agricultural Review for November, 1882, Prof. T. J. Bur- 
rill, of Champaign, I]., published an account of this fungus under 
the name of the ‘‘ Raspberry Cane Rust.” This is, so far as weare 
aware, the only publication relative to the subject. Professor Bur- 
rill did not name the fungus but merely referred to it as the ‘“‘Rasp- 
berry Cane Rust,” the popular name by which it is generally known, 
stating, however, that the parasite probably belonged to the same 
group as the fungus that caused the disease of the grapes known as 
Anthracnose. During the past two years numerous complaints of 
the serious injury caused by this fungus have been received by the 
Section from Illinois, New Jersey, Texas, Wisconsin, and Missouri, 
indicatmg that the disease is wide-spread and destructive. 
The first time the disease was observed in Missouri was in May, 
1887, in the horticultural grounds of the Missouri Agricultural Col- 
lege, and later in the season in various parts of the State. On June 
7, a raspberry plantation of 250 acres, located in the southern part of 
the State, was visited, and it was found that nearly all of the Black- 
caps were suffering from the attacks of the parasite. Other planta- 
tions in the southwestern part of the State were examined, and in all 
cases the Black-cap raspberries were attacked. The owners, in many 
instances, were ignorant of the cause of the trouble; some thought 
that the injury was due to insects, while others attributed, it to “‘sun 
scald.” From information received from the fruit-growing region of 
Illinois, it is evident that the parasite caused considerable injury in 
that State. Ina letter dated June 20, 1887, Mr. F. S. Earle says ‘‘that 
the ‘ Raspberry Cane Rust’ is seriously injuring Black-cap raspberries 
and the thornless varieties of blackberries in southern Illinois.” 
An instance is given by Professor Burrill* of a blackberry planta- 
tion that yielded a profit of $400 a year which was so reduced in one 
year by the disease that it scarcely paid expenses the year following. 
from a careful examination of the raspberry plantations in southern 
Missouri the past season, the apparent injury to Black-caps is esti- 
mated to be from 10 to 12 per cent. of the entire crop. In some sec- 
tions the injury is much greater than in others; but we believe this 
is a fair estimate of the general loss. 
In November, 1887, Messrs. Ellis and Everhart described the fun- 
gus under consideration and, believing it to be anew species, named it 
Gleosporium necator.+ Theseauthors state that the fungus was re- 
* This name is proposed for the disease caused by this Gleosporium in uniformity 
with anthracnose of the vine caused by another species of the same genus. 
*Acricultural Review. 
+ Journal of Mycology, III, 129. Glaosporium necator, E. and E. On living canes 
of black and red raspberry. Sent from Evanston, Ill., by Charles Wheeler, August, 
1881, and from Cobden, Ill., by F.S. Earle, June, 1884; also received from Columbia, 
Mo., June, 1887,from B.T.Galloway. Spots caulicolous pale, with a slightly raised 
