196 Rerort or tHe Boranist oF THR 
Cyrosrora.—Dead peach branches are commonly infested by 
a species of Cytospora which is generally believed to be a sapro- 
phyte and considered of little importance; but we have so often 
seen this fungus intimately associated with dead and dying peach 
trees when no other sufficient cause for disease was evident, that 
we are becoming suspicious that it is, at least, a semiparasite. 
Young peach trees found dead in the spring and supposed to 
have been winter killed, often have the lower part of their 
trunks thickly covered with pimples. When the outer bark is 
removed it is seen that the pimples are caused by the presence 
of flattened, roundish bodies, which in color, size, and shape, 
resemble flattened shot. The interior of these bodies is white. 
They are very suggestive of sclerotia. In reality, they are the 
stromata of Cytospora. Eventually, they may become divided 
into several chambers each containing multitudes of small, 
curved, hyaline spores. However, under some conditions they 
may remain indefinitely in the sclerotium-like stage and are then 
very puzzling to the uninitiated. What appears to be the same 
fungus occurs on the trunks and branches of apricots and plums. 
(See pages 181, 201.) 
SPLITTING OF THE TruNK.—In a peach orchard at Trumans- 
burg, 20-25 per ct. of the trees show conspicuous scars on the 
trunks, chiefly on the southwest side. The owner states that four 
or five years ago the trunks split from the ground to the crotch 
as a result of severe freezing. In the spring following the win- 
ter in which the injury occurred, the edges of the wounds were 
trimmed back to the living tissue and painted with Bordeaux 
mixture. The majority of the trunks have healed over nicely 
without any injury from rot. One fresh crack was observed 
which was evidently due to the winter of 1899-1900. The trees 
are of the variety Elberta and were very vigorous previous to 
the occurrence of the injury.® 
OTHER Dismasps.—Black spot or scab, Cladespntegs carpophi- 
lum Thiim, occurred sparingly. 
"© For an illustration of a split peach trunk and a discussion of the treat- 
ment of such injury, see Bailey, L. H. The Pruning Book, pp. 122-123. 
The MacMillan Co., New York, 1898. 
rs 
