Collared Earthstar vs Rayed Earthstar

Geastrum triplex compared with Geastrum quadrifidum

Key Differences

• Collared Earthstar is Near Threatened while Rayed Earthstar is Extinct.

Taxonomic Classification

Rank	Collared Earthstar	Rayed Earthstar
Kingdom same	Fungi (फफूंद)	Fungi (फफूंद)
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 triplex	Geastrum quadrifidum

Evolutionary Relationship

Collared Earthstar and Rayed Earthstar share a common ancestor at the Genus level: Geastrum.

Conservation Status

Collared Earthstar

NT — Near Threatened

Rayed Earthstar

EX — Extinct

Physical Characteristics

Attribute	Collared Earthstar	Rayed Earthstar
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Collared Earthstar

Habitat

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

Range

Distributed across Belgium, Brazil, Norway, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Rayed Earthstar

Habitat

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

Range

Distributed across Belgium, Norway, and Sweden.

Collared Earthstar

<em>Geastrum triplex</em>, the Collared Earthstar, is a gasteroid fungus in the family Geastraceae, order Geastrales. This species is assessed as Near Threatened on the IUCN Red List, indicating that it may be at risk of qualifying for a threatened category in the near future. It has been recorded in Belgium, Brazil, Norway, and the United States, and is associated with forest floors, decomposing wood, and soil. Earthstars in the genus <em>Geastrum</em> are recognized by their distinctive star-shaped fruiting bodies, formed when the outer wall splits and folds back into ray-like segments to reveal an inner spore sac. <em>Geastrum triplex</em> is distinguished by the formation of a collar or cup-like structure around the base of the inner spore sac, which gives rise to its common name. Like other gasteroid fungi, it disperses spores through an apical pore in the spore sac. Population estimates and trend data are not available. Biological traits of this species remain poorly documented in the scientific literature. Its Near Threatened status may reflect sensitivity to habitat disturbance and forest management practices.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇳🇴 Norway