Least Stonewort vs Smooth Stonewort

Nitella confervacea compared with Nitella flexilis

Key Differences

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

Taxonomic Classification

Rank	Least Stonewort	Smooth 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 confervacea	Nitella flexilis

Evolutionary Relationship

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

Conservation Status

Least Stonewort

EN — Endangered

Smooth Stonewort

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

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.

Smooth 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.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden