Slender Stonewort vs Smooth Stonewort

Nitella gracilis compared with Nitella flexilis

Key Differences

• Slender Stonewort is Vulnerable while Smooth Stonewort is Least Concern.

Taxonomic Classification

Rank	Slender Stonewort	Smooth Stonewort
Kingdom same	Plantae (Pflanzen)	Plantae (Pflanzen)
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 gracilis	Nitella flexilis

Evolutionary Relationship

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

Conservation Status

Slender Stonewort

VU — Vulnerable

Smooth Stonewort

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

Slender Stonewort

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (Denmark, Norway, Sweden), North America (United States), and South America (Brazil). Currently classified as Vulnerable 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 5 countries:

🇧🇷 Brazil 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States