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Mexican fan palm, Washingtonia robusta, with petiole blight, caused by Serenomyces spp. The segments in the leaf blade will yellow and die in a wedge-shape pattern.

In this Mexican fan palm with petiole blight, caused by <i>Serenomyces</i> spp., the segments in the leaf blade yellow and die in a wedge-shape pattern. culture, disease, petiole/rachis blight; Los Angeles Co, CA Credit: Donald R. Hodel, UCCE Los Angeles County
Mexican fan palm, Washingtonia robusta, with petiole blight, caused by Serenomyces spp. The segments in the leaf blade will yellow and die in a wedge-shape pattern. Credit: Donald R. Hodel, UCCE Los Angeles County
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