Singleleaf Ash, Dwarf Ash
Fraxinus anomala
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Dwarf ash as seen along the Hukaby Trail on the eastern outskirts of Sedona, Arizona........March 21, 2015.
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What might be an unusual dwarf ash (with 3-5 leaflets per leaf) as seen along the Hiline Trail between Sedona, AZ and the Valley of Oak Creek, AZ.........March 20, 2016. There don't appear to be any petals on the flowers.
Paul Slichter