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White ash (Fraxinus americana L.) derives its common name from the white under-surface of the leaf; the white effect is created by microscopic papillae with a high light-reflecting capacity. The specific name americana was given to the species because of its range in America.


Wright, Jonathan W.[Silvical characteristics of white ash (Fraxinus americana)]Silvical characteristics of white ash (Fraxinus americana)

The "green" in green ash (Fraxinus pennsylvanica Marsh.) refers to the leaves. They are nearly as bright green on the lower surface as on the upper. The specific Latin name 'pennsylvanica' was given to the species because it occurs in the United States and because in 1785 Pennsylvania and the Ame...


Wright, Jonathan W.[Silvical characteristics of green ash (Fraxinus pennsylvanica)]Silvical characteristics of green ash (Fraxinus pennsylvanica)

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