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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 Sigmoidotropis

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1 Stems trailing or twining; leaflet blades membranous to papery, usually glabrous; inflorescences with 2-5 floral nodes; flowers 2-3 cm long; legumes 6-14 cm long × 0.5 cm wide
1 Stems often intricately twining; leaflet blades membranous, usually densely pale-pubescent abaxially; inflorescences with 2 or 3 floral nodes; flowers 3-4 cm long; legumes 10-18 cm long × 0.4-0.7 cm wide