Grass-Leaf Pondweed vs small tortoiseshell

Potamogeton gramineus compared with Aglais urticae

Key Differences

• Grass-Leaf Pondweed is Endangered while small tortoiseshell is Near Threatened.

Taxonomic Classification

Rank	Grass-Leaf Pondweed	small tortoiseshell
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Liliopsida (Monocots)	Insecta (Insects)
Order	Alismatales (Alismatales)	Lepidoptera (Butterflies & Moths)
Family	Potamogetonaceae	Nymphalidae (Brush-footed Butterflies)
Genus	Potamogeton	Aglais
Species	Potamogeton gramineus	Aglais urticae

Conservation Status

Grass-Leaf Pondweed

EN — Endangered

small tortoiseshell

NT — Near Threatened

Physical Characteristics

Attribute	Grass-Leaf Pondweed	small tortoiseshell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Grass-Leaf Pondweed

Habitat

Inhabits 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 (8 countries) and North America (Canada, United States). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

small tortoiseshell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (41 countries). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

small tortoiseshell

small tortoiseshell (Aglais urticae) is classified as Near Threatened (NT) on the IUCN Red List. Close to qualifying as threatened, with populations that may become vulnerable without conservation action.

Shared Countries

Both species can be found in 8 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇫🇮 Finland 🇫🇷 France 🇮🇸 Iceland 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden