Uromyces valerianae
Uromyces valerianae is a gall-causing rust fungus affecting Common Valerian and Marsh Valerian. There is no host alternation. Aecia are borne in clusters, followed by brown uredinia and (rarely) dark brown telia.
Puccinia commutata also affects Valerian; it is described as having large black telia and being 'very rare' in Redfern and Shirley, 2023.
host 
Photograph the rust on the host. Ensure you have noted the host-plant species in your comments
On Valerian
Note: there is discrepancy between the information on 'Plant Parasites of Europe', Malcolm Storey's 'BioImages' website and Redfern & Shirley 2023 - 'British Plant Galls'. We have followed the latter source.
Melinda Bell
Ashby Canal,Congerstone
23 August 2021
underside of Valerian leaf
Melinda Bell
Ashby Canal,Congerstone
23 August 2021
on Valerian
Leicestershire & Rutland Map
Enter a town or village to see local records
MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020
UK Map
Species profile
- Species group:
- Fungi
- Kingdom:
- Fungi
- Order:
- Pucciniales
- Family:
- Pucciniaceae
- Records on NatureSpot:
- 1
- First record:
- 23/08/2021 (Bell, Melinda)
- Last record:
- 23/08/2021 (Bell, Melinda)
Total records by month
% of records within its species group
10km squares with records
The latest images and records displayed below include those awaiting verification checks so we cannot guarantee that every identification is correct. Once accepted, the record displays a green tick.
In the Latest Records section, click on the header to sort A-Z, and again to sort Z-A. Use the header boxes to filter the list.