Fungi
The arrival of the saprotrophic guild. First Bos observation in 2008 — when the original 1934–1970 plantings had matured to about 74 years and dead wood was finally beginning to accumulate under the Bosplan's deadwood-retention policy. Now 588 observations: the most common bracket fungus in the Bos. The dead-wood economy did not exist when the Bos was young.

| Total observations in the Bos | 588 |
| First recorded | 2008-10-04 |
| Last recorded | 2026-05-20 |
| Max rarity tier | 1 — common |
Data derived from 136,107 waarneming.nl observations at location 5013 (Amsterdamse Bos), scraped May 2026. Bos-context text: manually composed from the Bosplan 2020–2030, amsterdamsebos.nl, and the existing Het Onzichtbare Zichtbaar dossiers.