American Lady'S Tresses vs Common Ladies' Tresses

Spiranthes romanzoffiana compared with Spiranthes cernua

Key Differences

• American Lady'S Tresses is Least Concern while Common Ladies' Tresses is Not Evaluated.

Taxonomic Classification

Rank	American Lady'S Tresses	Common Ladies' Tresses
Kingdom same	Plantae (plantas)	Plantae (plantas)
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	Spiranthes	Spiranthes
Species	Spiranthes romanzoffiana	Spiranthes cernua

Evolutionary Relationship

American Lady'S Tresses and Common Ladies' Tresses share a common ancestor at the Genus level: Spiranthes.

Conservation Status

American Lady'S Tresses

LC — Least Concern

Common Ladies' Tresses

NE — Not Evaluated

Physical Characteristics

Attribute	American Lady'S Tresses	Common Ladies' Tresses
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

American Lady'S Tresses

Habitat

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

Range

Distributed across Canada, France, Norway, and United States.

Common Ladies' Tresses

Habitat

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

Range

Distributed across Belgium, Canada, and United States.

American Lady'S Tresses

The American Lady'S Tresses (Spiranthes romanzoffiana) is a species in the genus Spiranthes. It is currently classified as Least Concern on the IUCN Red List. Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Common Ladies' Tresses

Common Ladies' Tresses (<em>Spiranthes cernua</em>) is a terrestrial orchid in the family Orchidaceae, native to North America and parts of Europe. Its range includes Belgium, Canada, and the United States, where it typically grows in grasslands, wetlands, forests, and cultivated landscapes. The species is characterized by a spiral arrangement of small white flowers along a slender stem, giving rise to the common name. It typically favors moist, open habitats including wet meadows, stream banks, bogs, and the margins of ponds, though it also occurs in drier grasslands and open woodlands. As an orchid, it depends on mycorrhizal fungi for germination and early establishment. Its conservation status has not been formally evaluated by the IUCN. Common Ladies' Tresses is considered a late-season bloomer in temperate North America and is valued as an indicator of high-quality natural habitats where it persists. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 2 countries:

🇨🇦 Canada 🇺🇸 United States