Franklin’s Lady’s-slipper vs Ram'S Head Lady'S Slipper

Cypripedium passerinum compared with Cypripedium arietinum

Key Differences

• Franklin’s Lady’s-slipper is Vulnerable while Ram'S Head Lady'S Slipper is Near Threatened.

Taxonomic Classification

Rank	Franklin’s Lady’s-slipper	Ram'S Head Lady'S Slipper
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Liliopsida (Monocots)	Liliopsida (Monocots)
Order same	Asparagales (Asparagales)	Asparagales (Asparagales)
Family same	Orchidaceae	Orchidaceae
Genus same	Cypripedium	Cypripedium
Species	Cypripedium passerinum	Cypripedium arietinum

Evolutionary Relationship

Franklin’s Lady’s-slipper and Ram'S Head Lady'S Slipper share a common ancestor at the Genus level: Cypripedium.

Conservation Status

Franklin’s Lady’s-slipper

VU — Vulnerable

Ram'S Head Lady'S Slipper

NT — Near Threatened

Physical Characteristics

Attribute	Franklin’s Lady’s-slipper	Ram'S Head Lady'S Slipper
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Franklin’s Lady’s-slipper

Habitat

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

Range

Distributed across Canada and Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Ram'S Head Lady'S Slipper

Habitat

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

Range

Distributed across Canada and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Shared Countries

Both species can be found in 1 countries:

🇨🇦 Canada