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Washingtonia filifera Washingtonia filifera (Linden ex André) H. Wendl. Brahea filamentosa (Fenzi) H. Wendl. Brahea filifera W. Watson nom. inval. Neowashingtonia filamentosa (Fenzi) Sudw. Pritchardia filamentosa Fenzi Pritchardia filifera Linden ex André Washingtonia filamentosa (Fenzi) Kuntze Washingtonia filifera (Linden ex André) H. Wendl. var. robusta Parish California Fan Palm, Desert Fan Palm, Cotton Palm, Arizona Fan Palm
The California fan palm is the only palm that is native to the southwestern United States. They can live for as long as 250 years. The genus is named for George Washington. Identification: Palms reach 59' (18 m) in height, with tall thin gradually narrowing gray trunks up to 6' (1.8 m) around at the base. Leaf fronds are up to 6' (1.8 m) long, composed of a rounded, fanlike spray of narrow, pointed leaves at the end of each petiole (leaf stem). Fans are 3-6' (91-182 cm) around, and gray-green in color. Old leaves may remain attached indefinitely, forming a “petticoat” that can reach all the way to the ground, held together by threadlike fibers on and between the leaves. Small off-white flowers extend well beyond the foliage. The fruit is black berries, about ¼" (6.3 mm) in diameter, in clusters of long strings. Online References:
Washingtonia filifera on FLORIDATA Washingtonia filifera as Compiled by the Master Gardeners of the University of Arizona Pima County Cooperative Extension Washingtonia filifera on Wikipedia Washingtonia filifera on the USDA Forest Service's Fire Effects Information Database Washingtonia filifera on CalPhotos References:
Sibley, David Allen, The Sibley Guide to Trees, Alfred A. Knopf, 2009, p. 83 Washingtonia filifera description by Thomas H. Kent, last updated 16 Aug 2013.
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2/17/2007 · Anza-Borrego Desert State Park, CA Range:
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ID is uncertain 
