Erizo Orejudo vs Ray's Knotgrass

Hemiechinus auritus compared with Polygonum oxyspermum

Key Differences

• Erizo Orejudo is Least Concern while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	Erizo Orejudo	Ray's Knotgrass
Kingdom	Animalia (Animals)	Plantae (planta)
Phylum	Chordata (cordados)	Magnoliophyta (Flowering Plants)
Class	Mammalia (mamíferos)	Magnoliopsida (Dicots)
Order	Erinaceomorpha (Erinaceomorpha)	Caryophyllales (Caryophyllales)
Family	Erinaceidae	Polygonaceae
Genus	Hemiechinus	Polygonum
Species	Hemiechinus auritus	Polygonum oxyspermum

Conservation Status

Erizo Orejudo

LC — Least Concern

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	Erizo Orejudo	Ray's Knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Erizo Orejudo

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Cyprus, Spain, and Ukraine.

Ray's Knotgrass

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

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