Euphrasia nemorosa
common eyebright, hairy eyebright

Distribution: Introduced chiefly west of the Cascades in Washington.

Habitat: Disturbed areas.

Flowers: June - October

Origin: Introduced from Europe

Growth Duration: Annual

Conservation Status: Not of concern


Semi-parasitic, hairy annual, the stem 5-20 cm. tall, often well-branched.


Leaves all cauline, mostly opposite, often alternate above, ovate to broadly elliptic, deeply toothed.


Inflorescence a leafy-bracteate, terminal spike, the bracts broad and toothed; flowers white, often violet-tinged or with purple veins or a yellow spot; calyx deeply 4-cleft; corolla bi-labiate, the upper lip shallowly 2-lobed, the lower lip deeply 3-lobed, the lobes slightly notched; stamens 4; stigma entire.



Accepted Name:
Euphrasia nemorosa (Pers.) Wallr.
Publication: Ann. Bot. (London) 82. 1815.

Synonyms & Misapplications:
Euphrasia americana Wetts.
Euphrasia arctica Lange ex Rostr. ssp. borealis (F. Towns.) Yeo
Euphrasia canadensis F. Towns., misapplied
Euphrasia officinalis L., misapplied [HC]
Euphrasia pectinata Ten., misapplied
Euphrasia tatarica Fisch. ex Spreng., misapplied
Additional Resources:

PNW Herbaria: Specimen records of Euphrasia nemorosa in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Euphrasia nemorosa checklist entry.

E-Flora BC: Euphrasia nemorosa atlas page.

CalPhotos: Euphrasia nemorosa photos.

USDA Plants: Euphrasia nemorosa information.

36 photographs:
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