Lesion Mimics in Mule Palm (× Butyagrus nabonnandii)
Five leaflets. The first has tiny pinheaded yellow, red, and orange spots over a green background. The second is most green with some groups of tiny and slightly bigger, pinheaded, yellow spots. The third is covered throughout with tiny pinheaded yellow and some orange spots over a light green background. The fourth is mostly dark green with sparse, large yellow spots with orangey-red pinheaded spots with them. The fifth is mostly dark green with frequent groupings of large yellow spots with minimal orangey hues in their middles.
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Keywords

Arecaceae
× Butyagrus nabonnandii
lesion mimic phenotype
palm disease diagnosis

Categories

How to Cite

Dhillon, Braham, Lucas Altarugio, Seemanti Chakrabarti, and Kamaldeep Bansal. 2025. “Lesion Mimics in Mule Palm (× Butyagrus nabonnandii): PP382, 3 2025”. EDIS 2025 (2). Gainesville, FL. https://doi.org/10.32473/edis-pp382-2025.

Abstract

Palms (Arecaceae) are flowering plants with varied growth forms ranging from climbers to tree-like plants found across diverse habitats. Some palm species naturally hybridize with other species, whereas a few species can be artificially hybridized to produce new morphotypes. Mule palm (× Butyagrus nabonnandii) is an artificial hybrid that is becoming popular as a landscape ornamental because of its appearance and cold hardiness. However, hybridization among different species could lead to unintended outcomes, including lesion mimics. A lesion mimic phenotype was identified in mule palms growing across multiple farms across central and south Florida. As leaf spots are one of the most common symptoms observed during disease or nutritional deficiency, the detection of lesion mimics can sometimes be challenging. This publication documents a simple method to identify lesion mimics in palms. Correct diagnosis of lesion mimics would limit unnecessary applications of fungicides or fertilizers.

https://doi.org/10.32473/edis-pp382-2025
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References

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