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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 Acorus

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1 Midvein of the leaves about equally as prominent as 1-5 well-developed lateral veins parallel to the midvein (at least one of the other veins 0.75-1× as wide as the midvein); mature fruits produced; vegetative leaves (0.3-) avg. 0.8 (-1.3) cm wide; vegetative leaf margins planar, not undulate or crisped; flowers 2-3 mm long
1 Midvein of the leaves distinctly more prominent than the other main veins (none of the other veins > 0.6× as wide as the midvein); mature fruits not produced; vegetative leaves (0.5-) avg. 1.2 (-2.0) cm wide; vegetative leaf margins often crisped or undulate; flowers 3-4 mm long