White Cheese Polypore
(Tyromyces chioneus)
Conservation • Description • Habitat • Ecology • Distribution • Taxonomy
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Description |
White Cheese Polypore medium-sized, common, widespread, fleshy, bracket (shelf-like) fungus. It is not edible. It lives on decaying stumps and logs (saprobic). It is found singly or in groups of two or three living usually on dead hardwoods, occasionally on dead conifers. The fruiting body is annual. There is no stem. The bracket (cap) is fan-shaped to semicircular in outline, broadly convex or flat, The pore surface on the underside of the bracket is white at first, becoming yellowish with age. There are 3 to 5 pores per millimeter. The pores may be |
Similar Species |
Habitat and Hosts |
Woodlands. Usually on dead hardwoods, occasionally on dead conifers. |
Ecology |
Season |
July through December |
Distribution |
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Sources Biodiversity occurrence data published by: Minnesota Biodiversity Atlas (accessed through the Minnesota Biodiversity Atlas Portal, bellatlas.umn.edu, 7/24/2025). |
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| 7/24/2025 | ||
Occurrence |
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Common and widespread |
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Taxonomy |
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Kingdom |
Fungi (fungi) |
Subkingdom |
Dikarya |
Division |
Basidiomycota (club fungi) |
Subdivision |
Agaricomycotina (jelly fungi, yeasts, and mushrooms) |
Class |
Agaricomycetes (mushrooms, bracket fungi, puffballs, and allies) |
Subclass |
Agaricomycetidae |
Order |
Polyporales (shelf fungi) |
Family |
Incrustoporiaceae |
Genus |
Tyromyces |
A recent study (Justo et al., 2017) reviewed the Polyporales based on new molecular DNA data. The genera were realligned within three new and fifteen existing families. The genusTyromyces was transferred from the family Polyporaceae to the family Incrustoporiaceae. White Cheese Polypore is the only member of the family Incrustoporiaceae that occurs in Minnesota. |
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Subordinate Taxa |
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Synonyms |
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Bjerkandera chionea Boletus candidus Leptoporus albellus Leptoporus albellus subsp. chioneus Leptoporus chioneus Leptoporus chioneus f. chioneus Leptoporus chioneus f. pellucida Leptoporus lacteus f. albellus Polyporus albellus Polyporus candidus Polyporus chioneus Polystictus chioneus Tyromyces albellus Tyromyces albellus f. albellus Ungularia chionea |
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Common Names |
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White Cheese Polypore |
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Glossary
Mycelium
The vegetative part of a fungus; consisting of a mass of branching, thread-like hyphae, through which a fungus absorbs nutrients from its environment; and excluding the fruiting, reproductive structure.
Saprobic
A term often used for saprotrophic fungi. Referring to fungi that obtain their nutrients from decayed organic matter.
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Margot Avey |
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White Cheese Polypore |
About
Uploaded on Nov 18, 2011 White Cheese Polypore wild mushrooms hunting. Clear close up HD pictures and videos |
Visitor Sightings |
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| Margot Avey 8/13/2022 |
Location: Minnesota Landscape Arborateum, Chanhassan, MN |
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Apricity Apricity |
Location: Martin County, Fairmont, MN |
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| Mary Munn 11/14/2015 |
Location: SE Carlton County Posted pics/comments on https://www.facebook.com/groups/481958225234656/# |
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MinnesotaSeasons.com Sightings |
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Created: 10/23/2013 Last Updated: © MinnesotaSeasons.com. All rights reserved. |