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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 Acetosa

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1 Well-developed leaves with sagittate base (the lobes pointing downward, essentially parallel to the petiole); inner tepals of carpellate flowers 4-6 mm long (at fruiting), 1 or more with a tubercle; tepals of staminate flowers 2.0-3.0 mm long; achenes 2.0-2.5 mm long; plant perennial from a rhizome
image of plant
Show caption*© Sonnia Hill
1 Well-developed leaves with hastate base (the lobes divergent, pointing outward, at about 90 degrees from the petiole); inner tepals of carpellate flowers 1.2-3.5 mm long (at fruiting), none with a tubercle; tepals of staminate flowers 1.5-2.0 mm long; achenes 0.9-1.5 mm long; plant either perennial from a rhizome or annual from a taproot.
  2 Inner tepals (at fruiting) 1.2-1.7 (-2.0) mm long, about as long and wide as the achene, with a minute or absent free wing; pedicel jointed just below the tepals; plant perennial, from a thin, creeping rhizome
  2 Inner tepals (at fruiting) 2.5-3.2 mm long, much longer and wider than the achene, with an expanded, accrescent wing that develops prominent reticulate veins; pedicel jointed near its middle or base, well below the tepals; plants annual or short-lived perennials; from a taproot