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