Common eyebright vs Farlow’s eyebright

Euphrasia nemorosa compared with Euphrasia farlowii

Key Differences

• Common eyebright is Least Concern while Farlow’s eyebright is Not Evaluated.

Taxonomic Classification

Rank	Common eyebright	Farlow’s eyebright
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order same	Lamiales (Lamiales)	Lamiales (Lamiales)
Family same	Orobanchaceae	Orobanchaceae
Genus same	Euphrasia	Euphrasia
Species	Euphrasia nemorosa	Euphrasia farlowii

Evolutionary Relationship

Common eyebright and Farlow’s eyebright share a common ancestor at the Genus level: Euphrasia.

Conservation Status

Common eyebright

LC — Least Concern

Farlow’s eyebright

NE — Not Evaluated

Physical Characteristics

Attribute	Common eyebright	Farlow’s eyebright
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common eyebright

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found across Europe (6 countries) and North America (Canada, United States).

Farlow’s eyebright

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found in Canada.

Common eyebright

The Common Eyebright (<em>Euphrasia nemorosa</em>) is a small annual plant belonging to the genus Euphrasia within the family Orobanchaceae. This species is a hemiparasite, typically attaching its roots to the roots of neighbouring grasses and other plants to obtain water and nutrients, while also performing photosynthesis. It is often found in diverse terrestrial habitats ranging from tropical forests to temperate regions, including grasslands, heathlands, and woodland margins. Geographically, <em>Euphrasia nemorosa</em> is distributed across Europe, with confirmed records in countries including Belgium, Denmark, Finland, and France, as well as presence in North America in Canada and the United States. The species is assessed as Least Concern on the IUCN Red List, indicating a stable global population without immediate threat of extinction. Biological traits of this species remain poorly documented in the scientific literature, including specific data on lifespan, body size, and diet. The common name "eyebright" reflects its historical use in herbal medicine for treating eye ailments, though this application is not supported by modern clinical evidence.

Shared Countries

Both species can be found in 1 countries:

🇨🇦 Canada