Erysiphe trifoliorum
Erysiphe trifoliorum is a powdery mildew that affects legume species in the Fabaceae family, including Vetchlings, Bird's-foot Trefoils, Clovers, etc. - refer to Woods et al (2024) for more details.
On some hosts, Erysiphe pisi is very similar and detailed microscopic examination is necessary.
host/microscopy 
Photograph the mildew on the host plant, and add host species to the comments for your record. Depending on host species, microscopic examination is needed to separate from similar species on this host; refer to Woods et al (2024) for details.
Fabaceae family - legumes, clovers, vetchlings, etc.
Graham Calow
Sapcote, Land behind William Spencer Avenue
21 June 2022
on Red Clover
det. R Lemmon
Graham Calow
Sapcote, Leicester Road
22 July 2020
on Clover
det. R Lemmon from specimen
Graham Calow
Sapcote, Land behind William Spencer Avenue
21 June 2022
on Red Clover
Graham Calow
Sapcote, Leicester Road
22 July 2020
on Clover - specimen examined
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:
- fungus
- Kingdom:
- Fungi
- Order:
- Helotiales
- Family:
- Erysiphaceae
- Records on NatureSpot:
- 7
- First record:
- 08/09/2016 (Grimes, Martin)
- Last record:
- 21/06/2022 (Calow, Graham)
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.