Arizona ("Velvet") Ash (Fraxinus SPP)

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Main sources: Petrides, George & Olivia Petrides, 1992, A Field Guide to Western Trees, pp., Houghton-Mifflin; Zimmerman, Robert, 1969, Plant Ecology of an Arid Basin Tres Alamos-Redington Area Southeastern Arizona, Geological Survey Professional Paper 485-D, USGPrinting Office Washington, D.C.;

Ashes are trees having compound leaves with (3 to 9) leaflets on opposite sides of a common stalk. Zimmerman (1969) indicates that the ash trees growing in the valley floors of our San Pedro River tributaries are of the velutina ("velvet") species, with leaves 4 to 6 " long and each leaflet 1-3" long and pointed at both ends. Leaflet edges are "wavy-toothed" toward the tip. Below left: young leaves on old bark; below right: leaves' velvety underside.

As of 2003, we have considerable numbers of young ash trees in Hot Springs Canyon above the Yellow Cliffs.

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