Fraxinus papillosa Lingelsh.
Chihuahuan Ash, Chihuahua Ash
Oleaceae (Olive Family)
USDA Symbol: FRPA4
Small tree with leaflets whitish beneath.
Chihuahua Ash extends northward across the Mexican border into several mountainous areas and may be seen in Coronado National Forest in southeastern Arizona. It is easily recognized by the whitish lower surfaces of the leaflets. Under a microscope, the lower surfaces of the leaves appear as a solid mass of whitish beads, which are the minute projections or papillae of each epidermal cell. The Latin species name refers to this characteristic, present also in Texas Ash (Fraxinus albicans) and White Ash (Fraxinus americana), two related eastern trees. Apparently no botanical description of the flowers of this local species has been published.
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Bloom InformationBloom Color: Green
Bloom Time: Apr
DistributionUSA: AZ , NM
Native Distribution: SW. New Mexico, SE. Arizona, and N. Mexico; at 5000-7000 (1524-2134 m).
Native Habitat: Moist soils of canyons in mountains; in oak woodland.
BibliographyBibref 298 - Field Guide to Texas Trees (1999) Simpson, B.J.
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Additional resourcesUSDA: Find Fraxinus papillosa in USDA Plants
FNA: Find Fraxinus papillosa in the Flora of North America (if available)
Google: Search Google for Fraxinus papillosa
MetadataRecord Modified: 2015-11-12
Research By: TWC Staff