Lesser Smoothcap vs Merriam’s Pocket Mouse

Atrichum angustatum compared with Perognathus merriami

Key Differences

• Lesser Smoothcap is Vulnerable while Merriam’s Pocket Mouse is Least Concern.

Taxonomic Classification

Rank	Lesser Smoothcap	Merriam’s Pocket Mouse
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Bryophyta	Chordata (Chordates)
Class	Polytrichopsida (Polytrichopsida)	Mammalia (Mammals)
Order	Polytrichales (Polytrichales)	Rodentia (Rodents)
Family	Polytrichaceae	Heteromyidae
Genus	Atrichum	Perognathus
Species	Atrichum angustatum	Perognathus merriami

Conservation Status

Lesser Smoothcap

VU — Vulnerable

Merriam’s Pocket Mouse

LC — Least Concern

Physical Characteristics

Attribute	Lesser Smoothcap	Merriam’s Pocket Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Lesser Smoothcap

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (5 countries) and North America (United States). Currently classified as Vulnerable 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.