This declining tree was positive for Cherry leaf roll virus, Prune dwarf virus and Prunus necrotic ringspot virus. Note the stump on the left side of this image. These trees look normal in 2013 but were in decline or dead by 2016.
Jay W. Pscheidt, 2016.
Ornamental cherry with possible American plum line pattern virus. Note that the chlorosis on some of the leaves is on the veins and not between the veins. Other leaves have oak leaf-like line patterns.
Affected 'Montmorency' sour cherry foliage is a green and yellow mottle with the green along the midrib and larger veins.
OSU Extension Plant Pathology Slide Collection, 1948.
Cause Chondrostereumpurpureum, a fungus that attacks shoots, branches, trunks, and roots. In Oregon, the disease has been a problem in some sour cherry and prune orchards. It is known also to affect sweet cherries, apples, apricot, pears, peaches, plums, nectarines, some small fruits (such as blueberry), alder, willow and poplar.
This is silver leaf on apricot, which has similar symptoms. Note the branch in the middle with lighter colored leaves.
