PLATE 
PLATE 
EXPLANATION OF PLATES. 
VI.—A_ typical example of raspberry cane blight. A 
fruiting cane, variety Pride of Geneva, photographed, 
two-fiftis natural size, June 21, 1901. The.cane blight 
fungus attacked and killed the cane at the point indt- 
cated by the arrow. As a consequence, all foliage above 
this point withered. 
VII.—Five new canes, variety Pride of Geneva, inocu- 
lated with a pure culture of the cane blight fungus. 
(Coniothyrium), July 18, 1900. Photographed, natwral 
size, September 18, 1900. Shows method of using graft- 
ing wax to cover inoculations. The discoloration of the 
bark above and below the wax was pronounced. 
Puate VIII.—Ten new canes of Cuthbert raspberry inoculated 
PLATE 
with a pure culture of Coniothyrium June 6, 1902. Pho- 
tographed, natural size, August 9, 1902. Wax removed. 
IX.—Four raspberry canes showing the discolored areas 
caused by Spherella rubina. All natural size. 
Fig. 1—A new cane of Pride of Geneva. July, 1900. 
Bark brown. 
Fic. 2—A cane of the variety Talbot. showing spring ap- 
pearance of the areas on fruiting canes. Bark gray and 
thickly covered with perithecia of Spherella rubina. 
The majority of the perithecia contained only immature 
asct, but in a few spores were formed. Photographed 
April 22, 1902. 
Fies. 3 anp 4.—Fruiting canes of Whyte No. 7 and Car- 
PLATE 
leton respectively showing spring condition of the areas. 
Bark gray and covered with perithecia of Spherella 
rubina, mostly immature. On both canes a few Phoma 
pycnidia are intermingled with the Spherella perithecia. 
Photographed April 18, 1902. 
X.—Fias. 1-5, Spheerella rubina. 
Fig. 1.—A perithecium X 87. 
Fig. 2.—A fragment of one of the brown hypae from the 
base of the perithecium, X 725. 
Fig. 3.—An ascus X 9580. 
Fic. 4.—Four ascospores 966. 
Fig. 5.—A germinating ascospore X 465. 
Fic. 6.—Sia spores of the Phoma found associated with 
Spherella rubina, < 966. 
Fic. 7.—Ten spores of the raspberry cane blight Conio- 
thyrium, < 1033. 
Fic. 8.—Ten spores of Coniothyrium sp. found on dead 
PLATE 
blackberry canes, X 1038. 
All figures original and drawn with aid of camera 
lucida. 
XI.—The spraying. outfit used in the experiment at 
Charlotte. 
