Fraxinus quadrangulata (blue ash)

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Key Characteristics

  • Opposite, pinnately compound leaves; leaflets short-stalked
  • Twigs conspicuously 4-sided with low, corky ridges extending between the nodes
  • Bark with scaly plates, shaggy
  • Samara with fat seed cavity; wing broad, twisted and extending to the base of the seed cavity and surrounding it

Sourced from "Michigan Trees" pages 341


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Many come from Steve Baskauf at Vanderbilt University

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