A circle of tissue that is yellow, brown, or darker in color from the center tissue. Often ringspots are a circle of brown on a leaf with green in the center.

Circular area of chlorosis or necrosis with a green center. It is viral.

A type of local lesion consisting of single or concentric rings of discoloration or necrosis, the regions between the concentric rings being green. The center of the lesion may be chlorotic or necrotic. ( 16)