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Kuehneola uredinis

Pale bramble rust

Description

Kuehneola uredinis (Pale bramble rust) is a rust fungus affecting blackberries (Rubus fruticosus agg.) and related brambles. It completes its life cycle on the same host, overwintering on infected shoots and leaf litter. In spring, spermogonia and aecia appear as yellow warts on the upper surface of leaves, followed by uredinia on the underside and sometimes on stems and petioles. Telia are rare. The species is widespread in Europe, particularly in moist habitats. Infections can lead to premature leaf fall and reduced ornamental value of shrubs; in severe cases they may weaken plants, although the harmfulness is usually moderate.

Symptom

Yellow warts on the upper side of leaves, later orange uredinia on the underside; dark pustules may develop and affected leaves can fall prematurely.

Tree Species: Blackberry

Part of a plant- attacked: Tree trunk, Leaf / Needle, Branch

Pest significance: Harmful

Pest Category: Fungi

Invasive Species: No

Present in EU: Yes

Last observations

There are a total of 2 observations of the species in the system

Kuehneola uredinisPale bramble rust
milan
Number of votes: 0
Published: 10.9.2025

Kuehneola uredinisPale bramble rust
milan
Number of votes: 0
Published: 10.9.2025