Perofascia lepidii
A downy mildew causing a greyish-white down on various Lepidium (Swine-cress). It is a gall-causer; the plants are yellowed and the stems and inflorescences become swollen or distorted.
host 
Photograph both sides of the leaf and the downy mildew on the host plant; ensure you have noted the host species in your comments
on Swine-cresses
Graham Calow
Claybrooke Magna
18 August 2016
on Swine-cress (Lepidium coronopus)
Graham Calow
Claybrooke Magna
18 August 2016
on Swine-cress (Lepidium coronopus)
Graham Calow
Claybrooke Magna
18 August 2016
on Swine-cress (Lepidium coronopus)
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Species profile
- Species group:
- fungoid
- Kingdom:
- Chromista
- Order:
- Peronosporales
- Family:
- Peronosporaceae
- Records on NatureSpot:
- 3
- First record:
- 28/07/2016 (Grimes, Martin)
- Last record:
- 18/08/2016 (Calow, Graham)
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% of records within its species group
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