Perennial Ryegrass (Lolium perenne L.)
Also known as English ryegrass, winter ryegrass, ray grass.
Some authorities, including USDA PLANTS and BONAP, treat italian rye-grass (Lolium multiflorum) as a subspecies of this one, ssp. multiflorum. We treat them as separate species per FNA, POWO, and most other authorities. Some authorities recognize separate varieties of this species, but we do not.
↑Range - Expand
| Legend | Color |
| Introduced | |
| Introduced or Not Present |
This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.
Although this plant occurs somewhere in each of these regions, it may only occur in a small part of some or all of them.
↑Links & External Resources
• Lolium perenne (English Ryegrass) | Illinois Wildflowers (About This Site)
• Lolium perenne L. ssp. perenne (perennial ryegrass) | USDA PLANTS Database (About This Site)
• Lolium perenne | Go Botany (About This Site)
• Perennial Ryegrass | iNaturalist (About This Site)
• Lolium perenne (perennial ryegrass) | CABI Invasive Species Compendium (About This Site)
• Lolium perenne ssp. perenne - Perennial Rye Grass | Biota of North America Project (BONAP) (About This Site)
• Lolium perenne | NatureServe Explorer (About This Site)
• Lolium perenne | Flora of North America (About This Site)
• Lolium perenne | Missouri Plants (About This Site)
• Perennial Ryegrass | Maryland Biodiversity Project (About This Site)
• Lolium perenne L. var. aristatum Willd. (Italian Rye Grass, Annual Rye Grass)† | Digital Atlas of the Virginia Flora (About This Site)
• Lolium perenne L. var. perenne (English Rye Grass, Perennial Rye Grass)† | Digital Atlas of the Virginia Flora (About This Site)
• Lolium perenne L. (Rye Grass) | Digital Atlas of the Virginia Flora (About This Site)
• Lolium perenne L. | Plants of the World Online (POWO) (About This Site)
Different Taxonomic Treatments
† Each of these links refer only to part of the populations covered by this page.
