Cerotelium fici

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fig leaf with symptoms of infection by Cerotelium fici (click on image to enlarge it)
Author(s): Scot Nelson, Hawaii
Source: Flickr

Cerotelium fici (Castagne) Arthur 1917 - (fig rust)

This fungus is widely distributed in tropical and subtropical regions and causes leaf rust diseases on fig, mulberry and other Moraceae. On fig trees, fruits also become infected. The disease mainly develops under humid conditions, when infections can result in shedding of leaves and substantial yield losses. The spores spread by wind and rain splashes.

Uredinia are formed on the lower side of the leaves and are reddish-brown. Urediniospores are nearly spherical, sparsely covered with spines and usually have a size of around 25-30 x 20 µm. Telia are rare.

Vernacular names
• Deutsch: Rostpilz der Feige
• English: fig rust
• Español: roya de la higuera
• Français: rouille du figuier