Birch Rust - Melampsoridium betulinum
The rust affects the leaves of Birch and Alder as its primary host, producing powdey yellow uredinia on leaves, usually the under-surface. The telia are produced within the leaf (sub-epidermal).
The alternate aecial host is Larch. It is not considered to be gall-causing on either host.
host 
Photograph the rust on the host. Ensure you have noted the host-plant species in your comments
alternates between Larch and Birch trees
Barbara Cooper
Long Clawson
19 July 2016
uredinia on birch
Graham Calow
Sapcote, Land behind Northfield Drive
29 October 2024
uredinia on Alder
Barbara Cooper
Long Clawson
19 July 2016
underside of leaf
Graham Calow
Sapcote, Limes Play Area
28 October 2020
rust on Alder
David Gould
Enderby, Everards Meadows
28 September 2019
Barbara Cooper
Long Clawson
19 July 2016
Graham Calow
Sapcote, Land behind Northfield Drive
29 October 2024
rust on Alder
Barbara Cooper
Long Clawson
19 July 2016
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Species profile
- Common names
- Birch Rust
- Species group:
- fungus
- Kingdom:
- Fungi
- Order:
- Pucciniales
- Family:
- Pucciniastraceae
- Records on NatureSpot:
- 13
- First record:
- 13/07/2016 (Grimes, Martin)
- Last record:
- 29/10/2024 (Calow, Graham)
Total records by month
% of records within its species group
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Latest images
Latest records
Graham Calow
Sapcote, Land behind Northfield Drive
29 October 2024
rust on Alder
