Plant parts affected

Leaves, Stem, Inflorescence

Initial diagnosis:

Initially localized isolated white pustules or blisters are formed on lower side of leaves, later pustules coalesce to form patches on both side of the leaves.

Symptoms:

"Local infection appears as pustules or ""blisters"" filled with sporangia on leaves, smaller stems, and floral parts. Swelling of stem Inflorescences often becomes twisted giving a zig-zag appearance “stagheads”."

Damage type:

Abnormal growth, distortion, and sterility of flowers or inflorescences.