Black-stemmed Goldendrop vs Canadian beaver

Onosma nigricaulis compared with Castor canadensis

Key Differences

Black-stemmed Goldendrop is Critically Endangered while Canadian beaver is Not Evaluated.

Taxonomic Classification

Rank	Black-stemmed Goldendrop	Canadian beaver
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Mammalia (Mammals)
Order	Boraginales (Boraginales)	Rodentia (Rodents)
Family	Boraginaceae	Castoridae (Beavers)
Genus	Onosma	Castor (Beavers)
Species	Onosma nigricaulis	Castor canadensis

Conservation Status

Black-stemmed Goldendrop

CR — Critically Endangered

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Physical Characteristics

Attribute	Black-stemmed Goldendrop	Canadian beaver
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	1.0 m
Average Weight	—	25.0 kg

Habitat & Geographic Range

Black-stemmed Goldendrop

Habitat

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

Canadian beaver

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Widely distributed across Europe (15 countries), North America (United States), and South America (Argentina, Chile).

Black-stemmed Goldendrop

The Black-stemmed Goldendrop (Onosma nigricaulis) is a species in the genus Onosma. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Canadian beaver

The largest rodent in North America, Canadian beavers weigh up to 32 kg and are master ecosystem engineers inhabiting rivers, lakes, and wetlands across Canada and the northern United States. By felling trees and constructing dams up to hundreds of meters long, beavers create ponds that provide habitat for hundreds of species. Their lodges and canals transform entire watersheds. Once nearly hunted to extinction for their fur, beaver populations have recovered strongly.