Alpine Pondweed vs Flat-Stalk Pondweed

Potamogeton alpinus compared with Potamogeton friesii

Key Differences

• Alpine Pondweed is Critically Endangered while Flat-Stalk Pondweed is Near Threatened.

Taxonomic Classification

Rank	Alpine Pondweed	Flat-Stalk Pondweed
Kingdom same	Plantae (planta)	Plantae (planta)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Liliopsida (Monocots)	Liliopsida (Monocots)
Order same	Alismatales (Alismatales)	Alismatales (Alismatales)
Family same	Potamogetonaceae	Potamogetonaceae
Genus same	Potamogeton	Potamogeton
Species	Potamogeton alpinus	Potamogeton friesii

Evolutionary Relationship

Alpine Pondweed and Flat-Stalk Pondweed share a common ancestor at the Genus level: Potamogeton.

Conservation Status

Alpine Pondweed

CR — Critically Endangered

Flat-Stalk Pondweed

NT — Near Threatened

Physical Characteristics

Attribute	Alpine Pondweed	Flat-Stalk Pondweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alpine Pondweed

Habitat

Inhabits temperate broadleaf and mixed forests and boreal forests and taiga within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (6 countries) and North America (Canada, United States). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Flat-Stalk Pondweed

Habitat

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

Range

Found across Europe (5 countries) and North America (Canada, United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Alpine Pondweed

The Alpine Pondweed (Potamogeton alpinus) is a species in the genus Potamogeton. It is currently classified as Critically Endangered on the IUCN Red List. Inhabits temperate broadleaf and mixed forests and boreal forests and taiga within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations. Found across Europe (6 countries) and North America (Canada, United States).

Shared Countries

Both species can be found in 7 countries:

🇧🇪 Belgium 🇨🇦 Canada 🇩🇰 Denmark 🇫🇮 Finland 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States