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Support the Flora of the Southeastern US

2024 has been a banner year for making the best flora we can imagine. We've created:
With financial support from people like you, we are aiming even higher in 2025. Together we can accomplish all this: Vote on our 2025 priorities
  • Add Global Conservation Ranks (GRanks) vote
  • Professional graphic keys (polyclaves) to individual families/genera vote
  • 2 new FloraQuest apps: Florida & Mid-South vote
  • Image overlays highlighting diagnostic characters with arrows vote
  • iNaturalist integration in FloraQuest vote
Write-in vote: vote
We've set a goal of recruiting 200 ongoing supporters to donate $15 or more each month in 2025. Please help us reach this goal and make next year's flora even better:

Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.

Key to Eriochloa

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image of plant
Show caption*© Aidan Campos
image of plant
Show caption*© Aidan Campos
1 Lemma of fertile floret with an awn > 0.2 mm long; second glume awned; panicle compact, the raceme-like lateral branches close together and ascending-appressed, of irregular lengths; spikelets 8-16 on a typical, primary branch
image of plant
Show caption*© Keith Bradley
1 Lemma of fertile floret lacking an awn; second glume not awned; panicle open, the raceme-like lateral branches remote and divergent, the lowermost longest, the upper gradually reduced in length to the apex (E. acuminata var. acuminata, E. michauxii var. michauxii) or the panicle compact (E. villosa); spikelets 12-40 on a typical, primary branch.
  2 Spikelets 2.0-2.5 mm wide
  2 Spikelets 1.1-1.8 mm wide.
    3 Annual, 3-12 dm tall; spikelets 1.1-1.4 mm wide
    3 Perennial, 5-25 dm tall; spikelets 1.3-1.8 mm wide.
      4 Lower florets staminate; blades generally flat, 8-15 mm wide