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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:
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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 Diodia

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1 Sepals 4 and similar in size; style entire; [of dry habitats]
1 Sepals 2 (or 4, and then markedly dimorphic); style cleft; [of moist to wet habitats].
  2 Capsule length 3.5-5.5 mm, rotund to broadly ellipsoid; corolla tube length 4.0-7.5 mm; leaf length at midstem 14-36 mm
  2 Capsule length 6.5-9.0 mm, narrowly ellipsoid to broadly ellipsoid; corolla tube length 6.5-10.0 mm; leaf length at midstem 27-65 mm