Arched Earthstar vs Sessile Earthstar

Geastrum fornicatum compared with Geastrum fimbriatum

Key Differences

Arched Earthstar is Critically Endangered while Sessile Earthstar is Least Concern.

Taxonomic Classification

Rank	Arched Earthstar	Sessile Earthstar
Kingdom same	Fungi (Fungi)	Fungi (Fungi)
Phylum same	Basidiomycota (Club Fungi)	Basidiomycota (Club Fungi)
Class same	Agaricomycetes (Mushrooms)	Agaricomycetes (Mushrooms)
Order same	Geastrales (Geastrales)	Geastrales (Geastrales)
Family same	Geastraceae	Geastraceae
Genus same	Geastrum	Geastrum
Species	Geastrum fornicatum	Geastrum fimbriatum

Evolutionary Relationship

Arched Earthstar and Sessile Earthstar share a common ancestor at the Genus level: Geastrum.

View Genus: Geastrum

Conservation Status

Arched Earthstar

CR — Critically Endangered

Sessile Earthstar

LC — Least Concern

Physical Characteristics

Attribute	Arched Earthstar	Sessile Earthstar
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arched Earthstar

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Brazil). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Sessile Earthstar

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Brazil).

Arched Earthstar

The Arched Earthstar (Geastrum fornicatum) is a species in the genus Geastrum. It is currently classified as Critically Endangered on the IUCN Red List. Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types spanning the.