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Spikelets borne in dense, slender, foxtail-like inflorescences.
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Close-up view of individual spiklet showing the very unequal glumes.
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- Group 2: Infl. branches obscure. [Also can be keyed out through Group 5.]
- Spikelet not enclosed by spiny involucre (not Cenchrus).
- Lemma with one terminal awn.
- Lemmas and glumes similar in texture.
- Spikelets one per node (not Hordeum).
- Spikelets generally all fertile (not Lamarckia).
- Florets generally fertile & bisexual (no bulblets as in Poa bulbosa).
- Lemma obscurely 5 veined.
- Lemma awns less than 15 mm.
- Lemma awned from near the tip.
- Both glumes shorter than lowest floret.
- Glumes alike in shape (not Koeleria or Sphenopholis).
- Glumes tough and leathery, not papery.
- Lemna tip not 2-lobed or bifid (not Bromus).
- Both glumes shorter than lowest floret, awned from the tip.
- Inflorescence not one-sided (not Dactylis).
- A common, naturalized annual weed.
- Lower glume minute (definitely less than half the length of upper glume.
- Lemma margin with longer hairs (ciliate).
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