North America Non-native Plant

Maritime Eyebright

Botanical name: Euphrasia tetraquetra

USDA symbol: EUTE8

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Synonyms: Euphrasia canadensis Townsend (EUCA27)   

Maritime Eyebright: A Mysterious Annual Worth Understanding If you’ve stumbled across the name maritime eyebright (Euphrasia tetraquetra), you’re likely dealing with one of the more enigmatic members of the plant kingdom. This little annual forb is like that quiet person at a party – present but not exactly stealing the ...

Maritime Eyebright: A Mysterious Annual Worth Understanding

If you’ve stumbled across the name maritime eyebright (Euphrasia tetraquetra), you’re likely dealing with one of the more enigmatic members of the plant kingdom. This little annual forb is like that quiet person at a party – present but not exactly stealing the spotlight, yet interesting once you get to know them better.

What Exactly Is Maritime Eyebright?

Maritime eyebright belongs to the fascinating world of forbs – those herbaceous plants that lack woody stems but pack plenty of character into their annual lifecycle. As its scientific name Euphrasia tetraquetra suggests (sometimes listed under the synonym Euphrasia canadensis Townsend), this plant is part of the eyebright family, known for their traditionally small stature and delicate features.

This particular species is what botanists call a non-native introduction, meaning it arrived in North America from elsewhere and decided to make itself at home. Unlike some plant immigrants that become invasive party crashers, maritime eyebright appears to keep a relatively low profile.

Where You’ll Find It

Currently, maritime eyebright has been documented growing in Maine, where it seems to have found conditions to its liking. Its limited geographic distribution makes it something of a botanical mystery – either it’s incredibly picky about where it grows, or it’s simply flying under the radar in other suitable locations.

Should You Grow Maritime Eyebright?

Here’s where things get tricky. With so little documented information about this species’ specific growing requirements, garden performance, and ecological impacts, growing maritime eyebright is a bit like adopting a plant with an incomplete resume. While there’s no evidence suggesting it’s problematic, the lack of available cultivation information makes it challenging to recommend for most gardeners.

Consider Native Alternatives Instead

Since maritime eyebright is non-native and information about its garden value is scarce, you might want to consider some well-documented native alternatives that can provide similar ecological benefits:

  • Native wildflowers that support local pollinators
  • Indigenous forbs adapted to your specific region
  • Local eyebright species if available in your area

The Bottom Line

Maritime eyebright represents one of those botanical puzzles that remind us how much we still don’t know about the plant world. While it’s not flagged as invasive or noxious, its mysterious nature and limited documentation make it more of a curiosity than a garden staple.

If you’re interested in supporting biodiversity in your garden, focusing on well-documented native species will give you better results and clearer growing guidance. Save the botanical mysteries for the experts, and choose plants with proven track records for supporting local ecosystems.

After all, gardening should be rewarding, not a guessing game!

Maritime Eyebright

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Euphrasia L. - eyebright

Species

Euphrasia tetraquetra (Brébiss.) Arrond. - maritime eyebright

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA