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Leaf roll and marginal necrosis of a kava leaf (Piper methysticum), associated with infection of the leaf margins by a plant-pathogenic fungus, Mycosphaerella sp.

Leaf roll and vein clearing of a kava plant (Piper methyticum) associated with kava dieback disease cuased by cucumber mosaic virus (CMV).

Banana (Musa sp.) leaf rolled up with a small banana skipper (Erionota thrax) caterpillar inside.

Definition

Leaf roll is the upward rolling or curling of leaf blades.