Podosphaera aphanis
Podosphaera aphanis infects leaves, flowers, and fruit of plants in the Rosaceae family, including Lady's Mantle (Alchemilla), Parslet Piert (Aphanes arvensis), Strawberry (Fragaria), Herb Bennet or Avens (Geum), Cinquefoils/Tormentil etc. (Potentilla) and Blackberry/Raspberry etc. (Rubus). It has also been recorded on Eucalyptus.
Other powdery mildews may be found on Eucalyptus. Check host list in Woods et al (2024) - other plants in the Rosaceae family may be affected by different species of powdery mildew
host (Rosaceae) 
Eucalyptus 
Photograph the mildew on host plant, and add host species to the comments for your record. If you are recording on Eucalyptus, microscopic examination or verification by an expert before submission to NatureSpot will be needed
certain plants in the Rosaceae family; Eucalyptus
Graham Calow
Sapcote, Underwood Crescent
06 September 2020
var. aphanis on Geum urbanum
Graham Calow
Sapcote, footpath near Calver Hill Quarry site
22 July 2020
var. aphanis on Wood Avens specimen examined
Graham Calow
Sapcote, Marsh near Old Fosse
16 July 2020
var. aphanis - mildew on Parsley-piert
Graham Calow
Sapcote, footpath near Calver Hill Quarry site
22 July 2020
var. aphanis on Wood Avens specimen examined
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Species profile
- Species group:
- fungus
- Kingdom:
- Fungi
- Order:
- Helotiales
- Family:
- Erysiphaceae
- Records on NatureSpot:
- 23
- First record:
- 24/06/2016 (Grimes, Martin)
- Last record:
- 11/08/2025 (lemmon, roy)
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