Gray-shanked Douc Langur vs Ray's Knotgrass

Pygathrix cinerea compared with Polygonum oxyspermum

Key Differences

• Gray-shanked Douc Langur is Critically Endangered while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	Gray-shanked Douc Langur	Ray's Knotgrass
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Magnoliopsida (Dicots)
Order	Primates (Primates)	Caryophyllales (Caryophyllales)
Family	Cercopithecidae (Old World Monkeys)	Polygonaceae
Genus	Pygathrix	Polygonum
Species	Pygathrix cinerea	Polygonum oxyspermum

Conservation Status

Gray-shanked Douc Langur

CR — Critically Endangered

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	Gray-shanked Douc Langur	Ray's Knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray-shanked Douc Langur

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.