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Leaf blight/Anthracnose (Discula spp.) on Maple (Acer spp.)


14 Images
5405285
Paul Bachi
University of Kentucky Research and Education Center

Upper surface of several leaves with large tan-brown blotchy areas starting between the major veins but eventually coalescing to blight large areas of the leaves believed to be caused by a species of Discula.

5405286
Paul Bachi
University of Kentucky Research and Education Center

Upper surface of several leaves with large tan-brown blotchy areas starting between the major veins but eventually coalescing to blight large areas of the leaves believed to be caused by a species of Discula.

5405287
Paul Bachi
University of Kentucky Research and Education Center

Upper surface of a single leaf with large tan-brown blotchy areas starting between the major veins but eventually coalescing to blight large areas of the leaves believed to be caused by a species of Discula.

5405288
Paul Bachi
University of Kentucky Research and Education Center

Close-up of the upper surface of a leaf with large tan-brown blotchy area believed to be caused by a species of Discula.

5405289
Paul Bachi
University of Kentucky Research and Education Center

Close-up of the upper surface of a leaf with large tan-brown blotchy area believed to be caused by a species of Discula.

5405290
Paul Bachi
University of Kentucky Research and Education Center

Close-up of the lower surface of a blighted area of a leaf believed to be caused by a species of Discula.

5405291
Paul Bachi
University of Kentucky Research and Education Center

Close-up of the lower surface of a blighted area of a leaf showing black dots ("acervuli") along the major veins believed to be of a species of Discula.

5405292
Paul Bachi
University of Kentucky Research and Education Center

Close-up of the lower surface of a blighted area of a leaf showing black dots ("acervuli") along the major veins believed to be of a species of Discula.

5405293
Paul Bachi
University of Kentucky Research and Education Center

Close-up of the lower surface of a blighted area of a leaf showing black dots ("acervuli") along the major veins believed to be of a species of Discula.

5405294
Paul Bachi
University of Kentucky Research and Education Center

Lower surface of a blighted area of a leaf stained to show mycelium and acervuli along the major veins believed to be of a species of Discula.

5405295
Paul Bachi
University of Kentucky Research and Education Center

Lower surface of a blighted area of a leaf stained to show mycelium and acervuli along the major veins believed to be of a species of Discula.

5405296
Paul Bachi
University of Kentucky Research and Education Center

Close-up of a blighted area of a leaf stained to show an acervulus along a major vein believed to be of a species of Discula.

5405297
Paul Bachi
University of Kentucky Research and Education Center

A single stained acervulus and several conidia believed to be of a species of Discula.

5405298
Paul Bachi
University of Kentucky Research and Education Center

A single stained acervulus and several conidia believed to be of a species of Discula.