North America Non-native Plant

Wildrye

Botanical name: Elymus ciliaris ciliaris

USDA symbol: ELCIC

Habit: grass

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Agropyron ciliare (Trin.) Franch. (AGCI2)  ⚘  Roegneria ciliaris (Trin.) Nevski (ROCI3)   

Wildrye: Understanding the Mysterious Elymus ciliaris ciliaris If you’ve stumbled across the name Elymus ciliaris ciliaris in your gardening research, you might be scratching your head – and for good reason! This particular designation within the wildrye family is quite the botanical puzzle, with limited information available even in scientific ...

Wildrye: Understanding the Mysterious Elymus ciliaris ciliaris

If you’ve stumbled across the name Elymus ciliaris ciliaris in your gardening research, you might be scratching your head – and for good reason! This particular designation within the wildrye family is quite the botanical puzzle, with limited information available even in scientific circles.

What Exactly Is This Plant?

Elymus ciliaris ciliaris belongs to the wildrye group, which are grasses in the Poaceae family. These are true grasses, not to be confused with sedges or rushes, though they’re all part of the larger grass-like plant community. The Elymus genus is known for producing bunch grasses that can be quite attractive in naturalistic landscapes.

This species has gone by other scientific names over the years, including Agropyron ciliare and Roegneria ciliaris, which reflects the ongoing botanical conversations about how to properly classify these grasses.

The Information Gap

Here’s where things get interesting (and a bit frustrating): specific details about Elymus ciliaris ciliaris are remarkably scarce. We don’t have clear information about its native range, exact growing requirements, or even its current conservation status. This lack of readily available information suggests it may be either:

  • An extremely localized or rare species
  • An outdated taxonomic designation that’s been reclassified
  • A subspecies that’s often grouped with its parent species in most references

What We Know About Wildrye Grasses

While we can’t speak specifically to Elymus ciliaris ciliaris, we can share what’s generally true about wildrye grasses. Most species in this group are:

  • Cool-season bunch grasses
  • Adapted to various conditions from prairies to woodlands
  • Valuable for erosion control and wildlife habitat
  • Attractive additions to native plant gardens

Should You Try to Grow It?

Given the uncertainty around this specific plant, we’d recommend taking a cautious approach. If you’re interested in wildrye grasses for your garden, consider these alternatives with well-documented benefits:

  • Canada wildrye (Elymus canadensis)
  • Virginia wildrye (Elymus virginicus)
  • Blue wildrye (Elymus glaucus)

These species have clear growing guides, known native ranges, and established benefits for pollinators and wildlife.

The Bottom Line

Sometimes in the plant world, we encounter these mysterious species that seem to exist in the shadows of botanical literature. Elymus ciliaris ciliaris appears to be one of them. While the name exists in some databases and references, the lack of detailed information makes it difficult to recommend confidently.

If you do encounter this plant or seeds labeled as such, proceed with curiosity but also caution. Consider reaching out to local botanists, native plant societies, or university extension services who might have more insight into this particular grass and whether it’s appropriate for your area.

In the meantime, there are plenty of well-documented wildrye species that can bring the beauty and ecological benefits of native grasses to your landscape without the guesswork!

Wildrye

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Elymus L. - wildrye

Species

Elymus ciliaris (Trin.) Tzvel. - wildrye

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