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DESCRIPTION:
Ryegrasses are annuals or short-lived perennials grasses with hairless, flat leaf blades.
Spikelets are widely spaced and alternate on the flowering spike.
Italian ryegrass, also called annual ryegrass,
Lolium multiflorum, and perennial ryegrass, Lolium perenne, are the most common weedy
ryegrasses in California. Perennial ryegrass is also used in lawns as a turf
species. Awned lemmas and a larger number of florets per spikelet (at least 10)
differentiate Italian ryegrass from perennial ryegrass, which has no awns and 10
or less florets per spikelet.
Grass ID illustration.
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