| 5356883 |
Sign |
Section of a plum branch showing signs of infection with black knot disease |
| 5366695 |
Sign |
Branches of a chokecherry (Prunus virginiana) showing signs and symptoms of black knot canker (Apiosporina morbosa). |
| 5366694 |
Sign |
Cross-section of the trunk of a chokecherry (Prunus virginiana) showing signs and symptoms of black knot canker (Apiosporina morbosa). |
| 5366692 |
Sign |
Section of a chokecherry branch (Prunus virginiana) showing signs and symptoms of black knot canker (Apiosporina morbosa). |
