Perenniporia medulla-panis

Perenniporia medulla-panis


Дабова ситнопорка



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Assessment info
Habitat and Ecology
Use and Trade
Conservation Actions


Scientific name

Perenniporia medulla-panis


(Jacq.) Donk


Boletus medulla-panis Jacq.

Assessment info

IUCN Red List Category and Criteria

Vulnerable B1ab(iii,iv,v)+2ab(iii,iv,v)

Date assessed

November 2020


Karadelev, M.

Iršėnaitė, R.


Kost, G.

Ivančević, B.


Rusevska, K.


Miskovic, M.


Perenniporia medulla-panis forms perennial, widely effused or resupinate tough-corky sporocarps. It grows on coarse old stumps, snags and logs of oak trees, rarely on other tree species (beech, poplar). It is considered rare and declining in many European countries as a result of the decline of old oaks throughout Europe.
The major threats to this species are the removal of dead wood and damaged trees, and loss of its habitat i.e. old, mature forests. None of the known stations are located in protected areas; thus, the species is under heavy anthropogenic impact due to logging of oak woods. Fires during summer season are another grave threat.
The total number of recorded individuals is about 10 but oak communities are widely distributed in the country; hence, the predicted number of specimens would be approximately 100.


Current population trend



Perenniporia medulla-panis is a rare species, and in N. Macedonia it occurs on old trunks of oak and poplar, and on one occasion it was also collected from beech. The species is found individually or with a few fruiting bodies on all known sites, and the number of known fruiting bodies is minor, totaling approximately 10 specimens. Nonetheless, one should take into account that оак forests are widely distributed in the continental parts of the country, which is the reason why the projected number of specimens would be as a minimum ten times the current number.

Habitat and Ecology


1 Forest
1.4 Forest – Temperate

Habitat and Ecology

Perenniporia medulla-panis is a saprotrophic wood-inhabiting fungus mainly growing on Quercus in old oak forests or mixed forests with beech, and also in riparian willowpoplar forests. It develops at the base of old barren stumps and coarse fallen trunks or on old living trees in trunk cavities. The fruit-body is not easy to spot as a result of its tendency to grow inside trunk cavities.

Use and trade

Use and trade

There is no confirmed use and trade of this species in N. Macedonia.



The major threats to the current species are the removal of dead wood and damaged trees, and loss of its habitat i.e. old, mature forests. None of the stations are within protected areas; hence, the species is under heavy anthropogenic impact due to logging of oak and beech woods. The threat manifests differently, and it is contingent on the community site but fires during summer season could pose another huge threat.

Conservation actions

Conservation actions

It is red-listed in 11 countries: Estonia (EN), Sweden (Threatened), Denmark (CR), Finland (VU), Latvia (VU), Lithuania (EN), Norway (VU), Poland (VU), Switzerland (VU), Austria (VU), Netherlands (NT). It is included in the Red Data Book of Leningrad Region, Russia.
Protection of old host trees is the crucial conservation action for species protection; study of the population number and range; interpretation of species status by means of enhanced understanding of the species biology and ecology; habitat conservation; study of the trends via monitoring



Hawksworth, D.L, Aguirre-Hudson, B. and Ainsworth, A.M. 2014. Sphinctrina tigillaris, an overlooked species of Chaenothecopsis growing on Perenniporia meridionalis, a polypore new to the UK. The Lichenologist 46: 729–735.

Iršėnaitė, R. 2019. Perenniporia medulla-panis. The IUCN Red List of Threatened Species 2019: e.T147437401A148022549.

Karadelev, M., 1999. A Preliminary Red List of Macromycetes in the Republic of Macedonia. . 1st Congress of Ecologists of the Republic of Macedonia with International Participation 5: 289-295. Ohrid, N.Macedonia.

Karadelev, M., Rusevska, K., 2013. Contribution to Macedonian Red List of Fungi. . 4th Congress of Ecologists of Macedonia with International Participation 28: 68-73. Ohrid, N. Macedonia.

Karadelev, M., Rusevska, K., Kost, G. and Mitic-Kopanja, M. L. 2018. Checklist of Macrofungal Species From the Phylum Basidiomycota of the Republic of Macedonia.

Acta Musei Macedonici Scientiarum Naturalium 21(1): 23-112.

Ryvarden, L. and Gilbertson, R.L. 1994. European Polypores. Part 2. Synopsis Fungorum 7: 388–743.

Stalpers, J.A. and Decock, C. 2006. Studies in Perenniporia: Polyporus unitus, Boletus medulla-panis, the Nomenclature of Perenniporia, Poria and Physisporus, and a Note on European Perenniporia with a Resupinate Basidiome. Taxon 55: 759-778.