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| Image | Descriptor | Description |
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| 1396150 | Symptoms | |
| 1399022 | Symptoms | |
| 4449048 | Sign | |
| 1400104 | Symptoms | "target canker" on aspen, Nicolet National Forest, Wisconsin. |
| 5373005 | Symptoms | |
| 1473087 | Symptoms | external before removing thin outter bark; "Nectria-like" canker |
| 1473088 | Symptoms | canker after removing the thin outter bark; compare to 1473087 |
| 1473075 | Symptoms | |
| 5056017 | Symptoms | |
| 5056016 | Symptoms | |
| 5056024 | Symptoms | |
| 5056019 | Symptoms | |
| 5042087 | Fruiting Bodies | birch bark disease |
| 1467026 | Sign | sporodochia |
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