Perennial Rye • Lolium perenne
Conditions: Allergic rhinitis; allergic asthma; allergic conjunctivitis.
Symptoms: Itchy, stuffy, or runny nose; post-nasal drip; sneezing; itchy, red or watery eyes; asthmatic symptoms.
Physical description: Short-lived perennial grass that grows up to 5 feet in height; grows at a fast rate; its leaf blades are flat or folded, glossy, dark green, and hairless.
Environmental factors: Grows on disturbed sites, pastures, meadows, fields, lawns, roadsides, and in clearings; wind-pollinated; one of the more significant grass allergens.
Cross-reactivity: Extensive cross-reactivity can be expected with other rye grasses, meadow grass, timothy, cocksfoot, and more.
- “Perennial.”Merriam-Webster. https://www.merriam-webster.com/dictionary/perennial
- “Rye.”Merriam-Webster. https://www.merriam-webster.com/dictionary/rye
- “Perennial Rye Grass (Lolium perenne).” PollenLibrary.com. http://www.pollenlibrary.com/Specie/Lolium+perenne/
Did You Know?
Rye seeds have been used as a cereal and emergency food in the past. They have also been used in folk remedies to cure a range of illnesses.