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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

KingdomPlantaePlants, but not fungi, lichens, or algae (from Stearn’s Botanical Latin)
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassLiliopsidaMonocots (plants with a single seed leaf); includes the lily family
SubclassArecidaePalm-like plants
OrderArecalesPalms
FamilyArecaceaePalms
GenusWashingtoniaAfter George Washington (1732-1799), first President of the United States
SpeciesfiliferaComposed of or bearing thread-like structures

About plant names...

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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Washingtonia filifera (California Fan Palm, Desert Fan Palm, Cotton Palm, Arizona Fan Palm)

2/17/2007 · Anza-Borrego Desert State Park, CA ID is uncertain

Range:

About this map...