Fungus
Poronidulus conchifer
Poronidulus conchiferAlso known as Little Nest Polypore, Shell-Bearing Polypore
Poronidulus conchifer develops a distinctive two-stage fruiting body, beginning as a tiny, sterile cup that resembles a miniature bird's nest before expanding into a fan-shaped polypore bracket. It feeds primarily on dead deciduous twigs and fallen branches, showing a strong ecological association with American elm and other hardwoods across eastern North America. As a white-rot saprobe, it breaks down complex lignin and cellulose, recycling essential nutrients into woodland soils.
Bracket FungusWood-DecayingNorth American
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & preyDead elm wood, Fallen hardwood branches, Lignin and cellulose
Predators
- Fungus gnats
- Darkling beetles
- Woodland snails
ThreatsDeforestation and clear-cutting of hardwood forests
HabitatsDeciduous and mixed temperate woodlands
Life spanSeveral months to 1 year (annual fruiting body)
Classification
- OrderPolyporales
- FamilyPolyporaceae
- GenusPoronidulus
- SpeciesPoronidulus conchifer
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Many edible mushrooms have toxic look-alikes; never eat wild fungi based on app identification alone.
Responsible observation
- Branch inspection: Look closely at fallen dead elm branches where small cup-like structures persist.
- Examine growth stages: Search for specimens bearing both the early sterile cup and the later shelf.
- Substrate care: Leave decaying fallen branches in place to avoid disrupting local fungal colonies.
Host Plant no rights reserved, uploaded by Étienne Lacroix-Carignan · cc0
Competitor Jerzy Opioła / CC BY-SA 3.0 · cc-by-sa
Ecological Neighbor (c) Richard Jacob, some rights reserved (CC BY), uploaded by Richard Jacob · cc-by
Morphological Look-alike (c) Jerry Cooper, some rights reserved (CC BY), uploaded by Jerry Cooper · cc-by
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