[Ryegrass: The Genus Lolium West of the Cascade Mountains of Oregon and Washington]

English Ryegrass, Perennial Ryegrass

Lolium perenne

Synonyms: Lolium multiflorum var. ramosum, Lolium perenne var. cristatum, Lolium perenne ssp. perenne

Close-up of the spikelets of English Ryegrass, Perennial Ryegrass: Lolium perenne (Synonyms: Lolium multiflorum var. ramosum, Lolium perenne var. cristatum, Lolium perenne ssp. perenne)

Close-up of several spikelets of perennial ryegrass as seen around the headquarters for the Tualatin River National Wildlife Refuge........September 19, 2011.

English Ryegrass, Perennial Ryegrass: Lolium perenne (Synonyms: Lolium multiflorum var. ramosum, Lolium perenne var. cristatum, Lolium perenne ssp. perenne) - Close-up of the inflorescence of English Ryegrass, Perennial Ryegrass: Lolium perenne (Synonyms: Lolium multiflorum var. ramosum, Lolium perenne var. cristatum, Lolium perenne ssp. perenne) - Close-up of several spikelets of English Ryegrass, Perennial Ryegrass: Lolium perenne (Synonyms: Lolium multiflorum var. ramosum, Lolium perenne var. cristatum, Lolium perenne ssp. perenne)

Additional close-up photos of perennial ryegrass as seen around the headquarters for the Tualatin River National Wildlife Refuge.........September 19, 2011.
Paul Slichter