Lolium L.

Glumes 1, except 2 on the terminal spikelet. Spikelets sessile, alternate on a flattened rhachis Lolium

Glume c. as long as, or longer than the spikelet

Spikelets linear to narrow-lanceolate, as broad as, or a little broader than the rhachis, not swollen at the fruiting stage, deeply embedded in the rhachis. Rhachis faintly zig zagged

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Rhachis roughly square in section. Spikelets with 3–5 florets. Otherwise similar to L. temulentum. Wimmera Ryegrass Lolium rigidum

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Rhachis much flattened, rectangular in section. Uncommon. Rigid Ryegrass Lolium loliaceum