Recently flushed peach leaves that are severely distorted, undersized, and yellow (top left) due to infection by the yellow bud mosaic strain of Tomato ringspot virus.

?Yellow bud? phase of yellow bud mosaic: severely stunted, yellow leaves of peach leaf buds infected by yellow bud mosaic strain of tomato ringspot virus; Placer Co.  Credit: Jack Kelly Clark
Credit: Jack Kelly Clark