Peronospora trifoliorum s. lat.
A downy mildew affecting Zigzag Clover, Trifolium medium. The mildew is under the leaves, and causes a corresponding yellow-green patch on the leaf upperside. This can appear as a series of broad, angular diagonal stripes on the leaves
Other species of Downy Mildew affect similar species of clover
host 
Photograph the mildew on the host plant; ensure you have identified the clover and have included a note of the host plant species in your comments
grasslands, on Zigzag Clover
sue
Thornton Meadows, northern part
17 May 2026
on Zigzag Clover
sue
Thornton Meadows, northern part
17 May 2026
sue
Thornton Meadows, northern part
17 May 2026
sue
Thornton Meadows, northern part
17 May 2026
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Species profile
- Species group:
- fungoid
- Kingdom:
- Chromista
- Order:
- Peronosporales
- Family:
- Peronosporaceae
- Records on NatureSpot:
- 1
- First record:
- 17/05/2026 (Timms, Sue)
- Last record:
- 17/05/2026 (Timms, Sue)
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