Merriam’s Pocket Mouse vs Rusty Firedot Lichen

Perognathus merriami compared with Blastenia ferruginea

Key Differences

• Merriam’s Pocket Mouse is Least Concern while Rusty Firedot Lichen is Critically Endangered.

Taxonomic Classification

Rank	Merriam’s Pocket Mouse	Rusty Firedot Lichen
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Ascomycota (Sac Fungi)
Class	Mammalia (Mammals)	Lecanoromycetes (Lecanoromycetes)
Order	Rodentia (Rodents)	Teloschistales (Teloschistales)
Family	Heteromyidae	Teloschistaceae
Genus	Perognathus	Blastenia
Species	Perognathus merriami	Blastenia ferruginea

Conservation Status

Merriam’s Pocket Mouse

LC — Least Concern

Rusty Firedot Lichen

CR — Critically Endangered

Physical Characteristics

Attribute	Merriam’s Pocket Mouse	Rusty Firedot Lichen
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Merriam’s Pocket Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Rusty Firedot Lichen

Habitat

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

Range

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