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Simmondsia chinensis

Higher Taxonomy
Family: SimmondsiaceaeView Description 

Common Name: JOJOBA FAMILY
Habit: Shrub, evergreen, much-branched; dioecious. Stem: bark smooth. Leaf: opposite, simple, leathery; base jointed; stipules 0. Inflorescence: staminate flowers in axillary clusters, pistillate generally 1. Flower: small, radial; sepals generally 5, overlapped, becoming larger in pistillate, disk 0; corolla 0; stamens 8--12, free, anthers elongate with longitudinal slits; ovary superior, chambers 3, styles 3, stigmas long, +- not persistent in fruit. Fruit: capsule, loculicidal. Seed: 1.
Genera In Family: 1 genus, 1 sp.: southwestern United States, Mexico. Note: Recently shown (e.g., Carlquist 2002) to be not closely related to Buxaceae, in which it was sometimes placed; 2° growth unusual, produced by successive cambia.
eFlora Treatment Author: Robert E. Preston & William J. Stone
Scientific Editor: Thomas J. Rosatti.
Genus: SimmondsiaView Description 

Common Name: GOAT-NUT, JOJOBA

Etymology: (T.W. Simmonds, English botanist, died exploring Trinidad, 1767--1804)

Simmondsia chinensis (Link) C.K. Schneid.
NATIVE
Habit: Hairs short, dense, appressed, less dense in age. Stem: 1--2 m; new growth +- hairy; branches stiff. Leaf: 2--4 cm, oblong-ovate, dull green, subsessile. Inflorescence: peduncle 3--10 mm. Flower: staminate sepals 3--4 mm, +- green, pistillate 10--20 mm in age; anthers yellow. Fruit: +- 1--2.5 cm, nut-like, ovoid, tough, leathery, obtusely 3-angled. Seed: large, including liquid wax. Chromosomes: 2n=26.
Ecology: Creosote-bush scrub, desert wash scrub, chaparral, coastal scrub; Elevation: < 1350 m. Bioregional Distribution: s SCo, PR, s DMoj, DSon; Distribution Outside California: northern Mexico. Flowering Time: Generally Mar--May Note: Important as forage pl; seed wax a substitute for sperm whale oil; fruit edible.
Synonyms: Buxus chinensis Link; Simmondsia californica Nutt.
eFlora Treatment Author: Robert E. Preston & William J. Stone
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botanical illustration including Simmondsia chinensis

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Citation for this treatment: Robert E. Preston & William J. Stone 2016. Simmondsia chinensis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=44601, accessed on April 30, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 30, 2016.


Simmondsia chinensis
click for enlargement
© 2013 California Academy of Sciences
Simmondsia chinensis
click for enlargement
© 2012 Keir Morse
Simmondsia chinensis
click for enlargement
© 2012 Keir Morse
Simmondsia chinensis
click for enlargement
© 2013 California Academy of Sciences
Simmondsia chinensis
click for enlargement
© 2012 Keir Morse
Simmondsia chinensis
click for enlargement
© 2012 Keir Morse

More photos of Simmondsia chinensis in CalPhotos


Geographic subdivisions for Simmondsia chinensis:
s SCo, PR, s DMoj, DSon;
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.
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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).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

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