American Water Plantain vs Black-Lined Periwinkle

Alisma subcordatum compared with Littorina saxatilis

Taxonomic Classification

Rank	American Water Plantain	Black-Lined Periwinkle
Kingdom	Plantae (plantas)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Mollusca (Moluscos)
Class	Liliopsida (Monocots)	Gastropoda (Gastrópodes)
Order	Alismatales (Alismatales)	Littorinimorpha (Littorinimorpha)
Family	Alismataceae	Littorinidae
Genus	Alisma	Littorina
Species	Alisma subcordatum	Littorina saxatilis

Conservation Status

American Water Plantain

LC — Least Concern

Black-Lined Periwinkle

LC — Least Concern

Physical Characteristics

Attribute	American Water Plantain	Black-Lined Periwinkle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

American Water Plantain

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Distributed across Canada and United States.

Black-Lined Periwinkle

Habitat

Found across multiple habitat types including tropical and subtropical grasslands and savannas, flooded grasslands and savannas, and deserts and xeric shrublands within the Afrotropic biogeographic realm.

Range

Widely distributed across Africa (Namibia, South Africa), Europe (5 countries), and North America (United States).

American Water Plantain

The American Water Plantain (Alisma subcordatum) is a species in the genus Alisma. It is currently classified as Least Concern on the IUCN Red List. Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Black-Lined Periwinkle

The Black-Lined Periwinkle (Littorina saxatilis) is a species in the genus Littorina. It is currently classified as Least Concern on the IUCN Red List. Found across multiple habitat types including tropical and subtropical grasslands and savannas, flooded grasslands and savannas, and deserts and xeric shrublands within the Afrotropic biogeographic realm.

Shared Countries

Both species can be found in 1 countries:

🇺🇸 United States