Dark Stonewort vs Least Stonewort

Nitella opaca compared with Nitella confervacea

Key Differences

• Dark Stonewort is Least Concern while Least Stonewort is Endangered.

Taxonomic Classification

Rank	Dark Stonewort	Least Stonewort
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Charophyta (Charophyta)	Charophyta (Charophyta)
Class same	Charophyceae (Charophyceae)	Charophyceae (Charophyceae)
Order same	Charales (Charales)	Charales (Charales)
Family same	Characeae	Characeae
Genus same	Nitella	Nitella
Species	Nitella opaca	Nitella confervacea

Evolutionary Relationship

Dark Stonewort and Least Stonewort share a common ancestor at the Genus level: Nitella.

Conservation Status

Dark Stonewort

LC — Least Concern

Least Stonewort

EN — Endangered

Physical Characteristics

Attribute	Dark Stonewort	Least Stonewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dark Stonewort

Habitat

Native to Europe and North America and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Denmark, Norway, Sweden, and United States.

Least Stonewort

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

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

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden