Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
Hesperocallis undulata

Higher Taxonomy
Family: AgavaceaeView DescriptionDichotomous Key

Habit: Perennial herb, shrub, tree, fibrous succulent or not, from bulbs or rhizomes. Stem: above ground or not, branched or not. Leaf: simple, deciduous or not, basal or in terminal rosettes, generally sessile, linear, lanceolate, oblanceolate or ovate, fibrous or not, thin and flexible or thick and rigid or succulent; margin entire, fine-serrate, dentate, or with filaments, tips rigid or flexible, with a spine or not. Flower: bisexual; perianth parts 6, in 2 petal-like whorls, free or +- fused; stamens 6, +- fused to perianth, filaments often wide, succulent; ovary superior or inferior, chambers 3, style 1 (thick, poorly defined), stigma head-like or 3-lobed. Fruit: capsule, indehiscent, loculicidal, or septicidal. Seed: few to many, +- flat or ovoid, generally black.
Genera In Family: 23 genera, 637 species: worldwide.
eFlora Treatment Author: Dale W. McNeal, except as noted
Scientific Editor: Dale W. McNeal, Thomas J. Rosatti.
Genus: HesperocallisView Description 

Common Name: DESERT LILY

Species In Genus: 1 sp. Etymology: (Greek: western beauty)

Hesperocallis undulata A. Gray
Habit: Perennial herb; bulb 4--6 cm, ovoid, deep. Stem: 30--180 cm, generally simple. Leaf: mostly basal (cauline reduced), 20--50 cm, 8--15 mm wide, blue-green; margins wavy, white. Inflorescence: raceme; bracts conspicuous, +- ovate, papery; pedicels +- 1 cm. Flower: jointed to pedicel, 4.5--6 cm, funnel-shaped; perianth parts 6, fused below, petal-like, white with silver-green midstripe especially abaxially, lobes 3--4 cm, +- oblanceolate, spreading; stamens 6, attached to perianth; ovary superior, chambers 3, style slender, stigma +- 3-lobed. Fruit: 12--16 mm, 3-lobed, loculicidal. Seed: +- 5 mm, flat, black. Chromosomes: n=24.
Ecology: Sandy flats; Elevation: < 800 m. Bioregional Distribution: D; Distribution Outside California: western Arizona. Flowering Time: Feb--May
eFlora Treatment Author: Dale W. McNeal
Jepson Online Interchange

Previous taxon: Hesperocallis
Next taxon: Hesperoyucca

Name Search
botanical illustration including Hesperocallis undulata


Citation for this treatment: Dale W. McNeal 2016. Hesperocallis undulata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 28, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 28, 2016.

Hesperocallis undulata
click for enlargement
© 2009 Thomas Stoughton
Hesperocallis undulata
click for enlargement
© 2010 Neal Kramer
Hesperocallis undulata
click for enlargement
© 2010 Steve Matson
Hesperocallis undulata
click for enlargement
© 2011 Neal Kramer
Hesperocallis undulata
click for enlargement
© 2004 James M. Andre
Hesperocallis undulata
click for enlargement
© 2010 Thomas Stoughton

More photos of Hesperocallis undulata in CalPhotos

Geographic subdivisions for Hesperocallis undulata:
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.