Source-reviewed species profile
Birch polypore Fomitopsis betulina
Kidney-shaped pale bracket with a smooth cap and white pore surface browning with age. This profile covers broad field features, season and habitat for learning.
Where can I find birch polypore?
Almost exclusively on dead or weakened birch trunks and branches.
In Mycoverse you can select Birch polypore and compare candidate search areas using a species-specific assessment of rainfall, estimated soil moisture, temperature, forest type, tree signals, canopy cover, terrain and season. Where source coverage is available, the assessment also uses historical species observations. Historical observations are historical data, not recent finds.
Images, text and app suggestions cannot confirm a species or food safety.
Field features
- Kidney-shaped pale bracket with a smooth cap and white pore surface browning with age.
Habitat and search guidance
Almost exclusively on dead or weakened birch trunks and branches.
Months
January–December (new fruit bodies especially June–November)
Safety status
Not presented as food or medical treatment. The app makes no health claims. Not presented as a food mushroom. This profile supports learning and safer boundaries; it does not approve a finding.
Sources and review status
Last reviewed: 30 September 2026.