Cinnabar Oysterling vs Flat Crep

Crepidotus cinnabarinus compared with Crepidotus applanatus

Taxonomic Classification

Rank	Cinnabar Oysterling	Flat Crep
Kingdom same	Fungi (Fungi)	Fungi (Fungi)
Phylum same	Basidiomycota (Club Fungi)	Basidiomycota (Club Fungi)
Class same	Agaricomycetes (Mushrooms)	Agaricomycetes (Mushrooms)
Order same	Agaricales (Gilled Mushrooms)	Agaricales (Gilled Mushrooms)
Family same	Crepidotaceae	Crepidotaceae
Genus same	Crepidotus	Crepidotus
Species	Crepidotus cinnabarinus	Crepidotus applanatus

Evolutionary Relationship

Cinnabar Oysterling and Flat Crep share a common ancestor at the Genus level: Crepidotus.

Conservation Status

Cinnabar Oysterling

VU — Vulnerable

Flat Crep

VU — Vulnerable

Physical Characteristics

Attribute	Cinnabar Oysterling	Flat Crep
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Cinnabar Oysterling

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Flat Crep

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Widely distributed across Europe (5 countries), North America (United States), and South America (Brazil). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Cinnabar Oysterling

Cinnabar oysterling (Crepidotus cinnabarinus) is a brightly colored bracket fungus in the family Crepidotaceae, found in Europe and North America, typically on dead deciduous wood including fallen logs, branches, and stumps in humid woodland settings. It is one of the more visually distinctive members of the genus, with vivid orange-red to cinnabar-red fruiting bodies—far more colorful than most Crepidotus species, which are typically pale and inconspicuous. The fruiting bodies are small, fan-shaped to kidney-shaped caps with a lateral attachment to the substrate, white gills that become pinkish-brown as spores mature, and no stalk. Crepidotus cinnabarinus is classified as Vulnerable, reflecting population declines associated with the loss of dead wood habitat in managed forests across Europe and parts of North America. Saproxylic fungi of this type depend on old-growth or mature woodland conditions with abundant coarse woody debris. Intensive forest management that removes deadwood and fallen logs significantly reduces habitat quality. The species is found in old-growth deciduous forest remnants and is an indicator of high conservation value woodland. Conservation measures include the retention of deadwood during forestry operations and the protection of ancient and veteran trees. Its striking coloration makes it a memorable indicator species for woodland ecologists.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States