Green Ash (Fraxinus pennsylvanica)

Plantae>Magnoliophyta>Magnoliopsida>Scrophulariales>Oleaceae>Fraxinus pennsylvanica Marsh.

Green Ash (Fraxinus pennsylvanica)

A fairly common overstory tree of riversides and other wet habitats. Very similar to White Ash (F. americana), which is more common and occurs in a wider variety of habitats, but the leaves are not glaucous (whitish) beneath and the wings on the samaras (fruits) extend slightly farther along the seed.

Green Ash (Fraxinus pennsylvanica)

The leaves are paler beneath, but green, not whitish. The easiest way to tell the species apart is to look at the leaf scars -- in Green Ash the lateral bud is above the leaf scar; in White Ash the bud sits within the U-shaped scar.

Several varieties of this variable species have been described, but they're not usually recognized as valid.

Green Ash (Fraxinus pennsylvanica) samaras

Durham Co., NC 6/8/03.

Green Ash (Fraxinus pennsylvanica) male flowers

The male flowers are in bizarre dark brown clusters.

Chapel Hill, NC 5/6/06.

More information:
Iowa State
Trees of Alabama and the Southeast
US Forest Service Silvics Manual
Virginia Tech Dendrology

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Revised 2/7/06 cwcook@duke.edu

All photographs and text ©2007 by Will Cook unless otherwise indicated.