Ink painting/drawing of Ramularia leaf spot on sugar beet, caused by the fungus Ramularia beticola.

The painting shows a single sugar beet leaf covered in round light grey-brown lesions. Each lesion has a dark brown ring at its outer border, and is surrounded by a pale yellow, chlorotic halo. In some areas the lesions have coalesced, but their darker margins can still be seen.

Top: scanned image

Bottom: photograph

This image is paired with Cercospora leaf spot (also on sugar beet)