Aurantiporus fissilis

Description

Aurantiporus fissilis is an inedible species of poroid fungus in the family Polyporaceae. It is a plant pathogen. This is a white bracket clump that has been growing parasitically on various deciduous broadleaved species. Usually located on sites of wounding/damage – principally, tear-outs and pruning wounds.

Although known primarily as a central and northern European species, it was recorded from Taiwan in 2016.

This species could be confused with Spongipellis spumeus.

Tyromyces fissilis is a synonym.

Common names: Greasy bracket.

Mushroom Identification

1. Fruiting Body

   Bracket shaped, upper surface rough, felty, whitish, pores large, 2 to 3 per mm, whitish, sometimes exuding clear or red droplets, to about 20 cm wide, and 10 cm thick.

2. Flesh

   Firm, moist, white.

3. Odor and Taste

   The odor is fungal, pleasant. The taste is mushroomy, bitter.

4. Season

   Late summer to autumn.

5. Habitat

   On dead wood from deciduous trees, favoring beech.

6. Spores

   Broadly ellipsoidal, smooth (4-5.5) x (2.5-3.5) µm2. Basidia club-shaped, 4 spored. Generative hyphae with clamps.

7. Spore Print

   White.

8. Microscopic Features

   Spore ellipsoidal.

9. Similar Species

   Trametes suaveolens (smells of aniseed).

Photo sources:

Photo 1 - Author: phillbobaggins (CC BY-SA 4.0)

Photo 2 - Author: Jerzy Opioła (CC BY-SA 4.0)

Photo 3 - Author: gailhampshire from Cradley, Malvern, U.K (CC BY-SA 2.0)