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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.


Leaf: petiole 1–2 m, generally armed, bases persistent on trunk; blade 1–2 m, generally persistent as brown "skirt," palmately divided nearly to middle, segments 40–60, margins folded upward, with thread-like fibers, tips ± reflexed. Inflorescence: within crown, > leaves, flowers borne singly. Flower: bisexual; calyx lobes ± erect; corolla lobes reflexed, white; pistil 1, ovary 3-lobed. Fruit: drupe, oblong or ovate, black, ± fleshy.
2 species: deserts of southern California, Arizona, northern Mexico. (George Washington, 1st president of USA, 1732–1799)
Unabridged references: [Clarke et al. 2007 Flora of the Santa Ana River and Environs; Henderson et al. 1995 Field guide to the Palms of the Americas; McCurrach 1960 Palms of the World: 264–265; Zona 2000 FNANM 22:105–106]

Key to Washingtonia

1. Mature trunk thick, ± gray, base generally not swollen; leaf blade gray-green, forming a loose, open crown ..... W. filifera

1' Mature trunk slender, ± brown, generally tapering from swollen base; leaf blade bright green, forming a compact crown ..... W. robusta


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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