Hummelinck s Laucha vs Ray's Knotgrass

Calomys hummelincki compared with Polygonum oxyspermum

Key Differences

• Hummelinck s Laucha is Least Concern while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	Hummelinck s Laucha	Ray's Knotgrass
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Magnoliopsida (Dicots)
Order	Rodentia (Rodents)	Caryophyllales (Caryophyllales)
Family	Cricetidae	Polygonaceae
Genus	Calomys	Polygonum
Species	Calomys hummelincki	Polygonum oxyspermum

Conservation Status

Hummelinck s Laucha

LC — Least Concern

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	Hummelinck s Laucha	Ray's Knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hummelinck s Laucha

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

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.