Infection on barberry showing detail of cross section of an infected leaf with aecium and spermogonium

Photographer

Clayton, Michael W.

Summary

• Photomicrograph
• A spermagonium is on the top of the leaf, an aecium is on the bottom. Plasmogamy occurs at the spermagonium, giving rise to dikaryotic hyphae. These hyphae grow through the leaf and form the aecia on the bottom.