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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
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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 Euphorbia, Key D: subgenus Euphorbia, section Nummulariopsis

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1 Leaf blades < 6× as long as wide; leaves 5-32 mm wide.
  2 Involucres of cyathia 2.4-3.6 mm tall and wide; styles 3.3-3.6 mm long, connate ca. 1/2 their length; [Highlands county in c. peninsular FL]
  2 Involucres of cyathia 1.3-2.5 mm tall and wide; styles (1-) 1.3-1.5 mm long, connate ca. 1/4 their length; [FL Panhandle]
1 Leaf blades (5-) 7-20 (-50)× as long as wide; leaves 1.5-14 (-15) mm wide.
    3 Peduncles 2-5 mm long (except that of the 1st cyathium at the base of the pleiochasium) and not exceeding the dichasial bracts; seeds depressed-globose, wider than long
    3 Peduncles 6-24 mm long, often exceeding the dichasial bracts; seeds ovoid-globose, longer than wide.
      4 Leaf blades 1.5-3.5 (-4.5) mm wide, 15-20 (-50)× as long as wide; leaf apices short-acute to acuminate; [FL peninsula]
      4 Leaf blades (3-) 4-15 (-15) mm wide, 5-10 (-25)× as long as wide; leaf apices obtuse to short-acute; [ne. FL west to s. MS]