Franklin’s Lady’s-slipper vs Japanese Ladyslipper

Cypripedium passerinum compared with Cypripedium japonicum

Key Differences

• Franklin’s Lady’s-slipper is Vulnerable while Japanese Ladyslipper is Endangered.

Taxonomic Classification

Rank	Franklin’s Lady’s-slipper	Japanese Ladyslipper
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 japonicum

Evolutionary Relationship

Franklin’s Lady’s-slipper and Japanese Ladyslipper share a common ancestor at the Genus level: Cypripedium.

Conservation Status

Franklin’s Lady’s-slipper

VU — Vulnerable

Japanese Ladyslipper

EN — Endangered

Physical Characteristics

Attribute	Franklin’s Lady’s-slipper	Japanese Ladyslipper
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.

Japanese Ladyslipper

Habitat

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