Dune Brittlestem vs Merriam’s Pocket Mouse

Psathyrella ammophila compared with Perognathus merriami

Key Differences

• Dune Brittlestem is Endangered while Merriam’s Pocket Mouse is Least Concern.

Taxonomic Classification

Rank	Dune Brittlestem	Merriam’s Pocket Mouse
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Mammalia (Mammals)
Order	Agaricales (Gilled Mushrooms)	Rodentia (Rodents)
Family	Psathyrellaceae	Heteromyidae
Genus	Psathyrella	Perognathus
Species	Psathyrella ammophila	Perognathus merriami

Conservation Status

Dune Brittlestem

EN — Endangered

Merriam’s Pocket Mouse

LC — Least Concern

Physical Characteristics

Attribute	Dune Brittlestem	Merriam’s Pocket Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dune Brittlestem

Habitat

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

Range

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

Merriam’s Pocket Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.