Substrate
Forest litter

The term "forest litter" (forest litter / humus) is broader than just leaf or needle litter. This substrate is typical of mixed forests, where a thick, multi-layered "cake" of dry grass, fallen leaves, needles, small twigs, bits of bark and seeds builds up on the ground.
Over time, the lower layers of this "cake" decompose into soft, black, fertile humus. This top layer (2 to 10 cm thick) is what we call forest litter.
24 species in the database.

Agaricus abruptibulbus
EdibleAgaricus haemorrhoidarius
Edible
Agaricus romagnesii
EdibleAgaricus squamuliferus
Edible
Amethyst deceiver
Laccaria amethystina
Edible
Amphinema byssoides
Inedible
Aniseed funnel
Clitocybe odora
Edible
Arched earthstar
Geastrum fornicatum
Inedible
Bitter coral
Ramaria fennica
Inedible
Black morel
Morchella conica
Conditionally edible
Blushing wood mushroom
Agaricus silvaticus
Edible
Butter cap
Rhodocollybia butyracea
Conditionally edible
Chanterelle
Cantharellus cibarius
Edible
Clouded funnel
Clitocybe nebularis
Conditionally edible
Clustered domecap
Lyophyllum decastes
Edible
Collared earthstar
Geastrum triplex
Inedible
Common cavalier
Melanoleuca melaleuca
Edible
Common funnel
Infundibulicybe gibba
Edible
Common morel
Morchella esculenta
Conditionally edible
Common puffball
Lycoperdon perlatum
Edible
Common stinkhorn
Phallus impudicus
Edible
Conifercone cap
Baeospora myosura
Inedible
Deceiver
Laccaria laccata
Edible
Early false morel
Verpa bohemica
Conditionally edible
The ideal environment
Forest litter is the most comfortable environment for mushrooms.
- The needles in it keep it loose and airy.
- The leaves provide quick nutrition for saprotrophs.
- The twigs hold moisture.
Even in a dry summer it's always damp and cool under the litter layer, which lets the mycelium survive.
What grows in forest litter?
This substrate hosts both saprotrophic mushrooms (which feed on it) and mycorrhizal ones (whose mycelium passes through the litter to the tree roots). According to David Arora, it's the most species-rich substrate:
1. Chanterelles (Cantharellus): They love hiding in deep, loose litter in mixed forests where there's plenty of moisture. Sometimes only their yellow edge peeks out, while the rest of the mushroom sits in the humus.
2. Brittlegills (Russula): All-round residents of forest litter. When you pick a brittlegill, you'll often notice its stem is clean, because it grew not from dirty soil but from soft humus.
3. Webcaps (Cortinarius): A huge genus of mushrooms (both edible and deadly poisonous) that blanket the litter of the autumn forest.
4. Death cap (Amanita phalloides): Its volva (the sac at the base) usually hides right in the litter layer, camouflaged among leaves and humus.
Questions and answers
Should you rake the forest litter to find mushrooms?
Sources
- 1.Зерова М.Я. та ін. Визначник грибів України. 1979
- 2.Roger Phillips. Mushrooms (Roger Phillips)
- 3.David Arora. Mushrooms Demystified
- 4.Index Fungorum