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Species map · Stereum hirsutum

Hairy curtain crust map of Turkey: where and when it grows

Our map holds 47 verified records of the hairy curtain crust (Stereum hirsutum) from 14 provinces of Turkey. Most come from İstanbul, Manisa, Muğla and Bolu; records peak in January, March and May.

records
47
provinces
14
regions
4
latest record
Sep 2026

How to identify the hairy curtain crust

Points are GBIF and iNaturalist records, each linking to its own record. Locations of protected species are rounded. Open on the main map →

Records by province

  • Marmara 28
  • Aegean 12
  • Black Sea 6
  • Mediterranean 1

Linked provinces have their own page with every species recorded there. Record density also reflects where observers work.

Which months?

Records by month
Jan7Feb4Mar7Apr4May11JunJul4Aug3Sep4Oct1NovDec2

This page covers only where and when the species is recorded in Turkey. For identification and edibility, see the species page. Built from research-grade, geo-referenced GBIF and iNaturalist records, refreshed at the start of every month.

Poisonous look-alikes of the hairy curtain crust

Records by region: Marmara 28; Aegean 12; Black Sea 6; Mediterranean 1. Most records come from İstanbul, Manisa, Muğla, Bolu, Balıkesir, Bursa, Düzce and Tekirdağ.

Records peak in January, March and May; about 10% of dated records fall in September–November and 46% in March–May.

The hairy curtain crust persists on wood all year; our records spread over almost every month, peaking in May and late winter (January, March).

On dead or felled hardwood: oak, beech, hornbeam, hazel and poplar branches, stumps and log piles. It causes white rot in the wood.

Turkey tail (Trametes versicolor, inedible): Turkey tail has a more multicoloured, velvety top and fine white pores underneath. The hairy curtain crust has a smooth, yellow-orange underside.

False turkey tail (Stereum ostrea, inedible): Larger and more boldly banded, with shorter hairs on top; the underside is also smooth. Telling them apart often needs a microscope.

Frequently asked questions

Where does the hairy curtain crust grow in Turkey?

Most records come from İstanbul, Manisa, Muğla, Bolu and Balıkesir.

When does the hairy curtain crust fruit in Turkey?

Records peak in January, March and May.

Which province has the most hairy curtain crust records?

İstanbul, followed by Manisa, Muğla and Bolu. The order also reflects where observers are active.

What habitat does the hairy curtain crust prefer?

On dead or felled hardwood: oak, beech, hornbeam, hazel and poplar branches, stumps and log piles. It causes white rot in the wood.

Can I pick mushrooms where they are recorded?

A record is not a permit. Commercial picking in state forests needs a permit; picking in national parks is prohibited.

How current is this map?

Records are re-fetched from GBIF and iNaturalist at the start of every month and this page updates automatically.

What should I do in case of mushroom poisoning?

Call 112 at once; Turkey's poison centre is 114.

Sources

  1. 6831 sayılı Orman Kanunu (mevzuat.gov.tr) mevzuat.gov.tr
  2. 2873 sayılı Millî Parklar Kanunu, md. 14 (mevzuat.gov.tr) mevzuat.gov.tr
  3. GBIF ve iNaturalist: Türkiye gözlem kayıtları (sitemizin haritası) gbif.org
All sources (6)
  1. Wikipedia (EN): Stereum hirsutum en.wikipedia.org
  2. First Nature: Stereum hirsutum first-nature.com
  3. iNaturalist: Stereum hirsutum (Türkçe ad ve Türkiye gözlemleri) inaturalist.org

Data sources and licences

Observations from GBIF.org (human observations and herbarium specimens; records flagged with geospatial issues excluded) and iNaturalist research-grade records, retrieved 2 November 2026. Macrofungi only (Agaricomycetes, Pezizomycetes), named to species. Every point links to its own record, with the recorder and licence (CC0, CC BY, CC BY-NC).

Map: © OpenStreetMap contributors. Province centres: Wikidata. Region comes from the record's GADM province, or the nearest province centre when missing. For protected species (iNaturalist "threatened" or IUCN VU/EN/CR) locations are rounded to ~10 km; locations obscured by iNaturalist are marked "approximate".

An observation shows that a mushroom was seen there on that day, not that it is there now or that it may be picked. Counts reflect how many people record fungi in an area more than how common a species is.

Last updated: Prepared by the Poros Mantar editorial teamReport a correction