Butter Cap vs

Rhodocollybia butyracea compared with Rhodocollybia prolixa

Key Differences

• Butter Cap is Least Concern while is Vulnerable.

Taxonomic Classification

Rank	Butter Cap
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	Omphalotaceae	Omphalotaceae
Genus same	Rhodocollybia	Rhodocollybia
Species	Rhodocollybia butyracea	Rhodocollybia prolixa

Evolutionary Relationship

Butter Cap and share a common ancestor at the Genus level: Rhodocollybia.

Conservation Status

Butter Cap

LC — Least Concern

VU — Vulnerable

Physical Characteristics

Attribute	Butter Cap
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Butter Cap

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and North America (United States).

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.

Butter Cap

The Butter Cap (Rhodocollybia butyracea) is a species in the genus Rhodocollybia. It is currently classified as Least Concern on the IUCN Red List. Typically found in forest floors, decomposing wood, and soil ecosystems.

Rhodocollybia prolixa is a saprotrophic mushroom with a pale brownish cap and a long, fibrous stipe, growing on decaying leaf litter and woody debris in temperate European forests. It contributes to the decomposition of organic matter on the forest floor. Classified as Vulnerable, this species is threatened by habitat loss and changes in woodland management that reduce accumulations of organic litter.

Shared Countries

Both species can be found in 5 countries:

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