Washingtonia filifera (L. Linden) H. Wendl.  
Family: Arecaceae
California fan palm,  more...
[Brahea filamentosa (Fenzi) H. Wendl.,  more]
Washingtonia filifera image
Anne Barber  
Stems massive, to 1.5 m 100--150 cm diam. 2n = 36. Flowering spring--summer. Native to desert washes, seeps, and springs where underground water is continuously available; of conservation concern; 100--1200 m; Ariz., Calif., Nev.; Mexico (Baja California). L. H. Bailey (1936) cited S. Watson, not H. Wendland, as the combining authority of this species, believing that Wendland did not explicitly make the new combination. The combination was made, however, by the journal editor, Anton de Bary, in the index to the volume, appearing on page (column) LXI. Hence, de Bary, not Watson, is the combining author (J. L. Strother, pers. cComm.). Naturalized populations of this species were reported at four sites in Nevada (J. W. Cornett 1987) and in Death Valley National Monument, California (J. W. Cornett 1988). L. R. McClenaghan and A. C. Beauchamp (1986) found low genetic variation among populations of Washingtonia filifera. V. J. Miller (1983) discussed the history and setting of W. filifera in Arizona.

PLANT: Trees to 15 m tall, the trunk to 1 m in diam. LEAVES: with filiferous segments; petioles bearing marginal curved or hooked spines, these prominent at the base but reduced apically. FLOWERS: 8-10 mm long. FRUITS: 7-10 mm long. NOTES: See also parent taxon for further description. Restricted to springs and seep areas of canyons: Kofa Mts., Yuma Co., and Alkali Springs, Yavapai Co.; 650-850 m (2000-2800 ft); Jun; CA; Baja C., Son., Mex. This species is widely planted from CA to FL as an ornamental tree. REFERENCES: Mason, Charles T., Jr. 1999. Arecaceae. Ariz.-Nev. Acad. Sci. 32(1).
Washingtonia filifera image
Anne Barber  
Washingtonia filifera image
L.R. Landrum  
Washingtonia filifera image
L.R. Landrum  
Washingtonia filifera image
L.R. Landrum  
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