Mahonia Rust - Puccinia mirabilissima
This rust affects the leaves of Berberis repens, Mahonia aquifolium and Mahonia japonica. There is no host-plant alternation. Aecia are orange and on leaf undersides; with a corresponding blackish spot above, usually on young leaves. Aecia may also form on fruits. Later, brown sori containing urediniospores and teliospores develop on leaf undersides.
host 
Photograph the rust on the host. Ensure you have noted the host-plant species in your comments
on Mahonia, usually in parks and gardens, and Berberis
Annie Smith
Charnwood Lodge NNR
12 September 2019
sue
Bagworth
19 April 2020
Annie Smith
Charnwood Lodge NNR
12 September 2019
Peter Smith
Cropston garden
20 May 2025
Peter Smith
Leicester, Abbey Park
09 March 2025
sue
Leicester, Abbey Park
17 March 2026
teliospores with long stalks and pear-shaped urediniospores
sue
Bagworth
19 April 2020
sue
Leicester, Abbey Park
17 March 2026
teliospores with long stalks and pear-shaped urediniospores
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Species profile
- Common names
- Mahonia Rust
- Species group:
- fungus
- Kingdom:
- Fungi
- Order:
- Pucciniales
- Family:
- Pucciniaceae
- Records on NatureSpot:
- 9
- First record:
- 12/09/2019 (Smith, Ann)
- Last record:
- 21/03/2026 (Timms, Sue)
Total records by month
% of records within its species group
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Latest images
Latest records
Peter Smith
Cropston garden
20 May 2025
Peter Smith
Leicester, Abbey Park
09 March 2025
Annie Smith
Charnwood Lodge NNR
12 September 2019
