Jepson eFlora: Taxon page
Vascular Plants of California
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Datura wrightii

Higher Taxonomy
Family: SolanaceaeView DescriptionDichotomous Key
Habit: Annual to shrub. Leaf: generally simple, generally alternate, generally petioled; stipules 0; blade entire to deeply lobed. Inflorescence: various. Flower: bisexual; calyx lobes generally 5; corolla +- radial, cylindric to rotate, lobes generally 5; stamens 5, on corolla tube, alternate lobes; ovary superior, generally 2-chambered, style 1. Fruit: berry, loculicidal or septicidal capsule, [(drupe)], 2--5-chambered.
Genera In Family: 75 genera, 3000 species: worldwide, especially +- tropics; many alien weeds in California; many cultivated for food, drugs, or ornamental (potato, tomato, peppers, tobacco, petunia). Toxicity: many TOXIC. Note: Nicandra physalodes (L.) Gaertn. is a waif.
eFlora Treatment Author: Michael H. Nee
Scientific Editor: Thomas J. Rosatti.
Genus: DaturaView DescriptionDichotomous Key

Common Name: JIMSON WEED
Habit: Annual to subshrub, hairs +- 0 or simple, ill-smelling. Leaf: entire to deeply lobed. Inflorescence: flowers 1 in branch forks. Flower: calyx circumscissile near base, leaving +- rotate collar in fruit; corolla funnel-shaped, white or +- purple, lobes 5(10); stamens attached below tube middle; ovary 2- or 4-chambered. Fruit: capsule, leathery or woody, prickly; valves 2--4 or irregular. Seed: +- flat, black, brown, gray-brown, or tan.
Etymology: (Hindu: ancient name) Toxicity: All species. TOXIC.
Datura wrightii Regel
Habit: Annual or perennial herb, 5--15 dm. Stem: white-puberulent. Leaf: 7--20 cm, ovate, entire or coarsely lobed. Flower: erect to nodding; calyx 8--12 cm, ribbed at least toward base, lobes +- 2 cm; corolla 15--20 cm, puberulent, white, lobes 1--2 cm, tips long, narrow; filaments 13--15 cm, anthers 12--15 mm; style 15--18 cm. Fruit: irregular-valved, nodding, 25--30 mm wide, puberulent; prickles 5--12 mm. Seed: 5 mm, flat, tan; margin grooved. Chromosomes: n=12.
Ecology: Sandy or gravelly open areas; Elevation: < 2200 m. Bioregional Distribution: NCoRI, c&s SNF, Teh, GV, CW, SW, D; Distribution Outside California: to Utah, Texas, Mexico. Flowering Time: Apr--Oct Note: Cultivated for showy flowers; may have been introduced by early Spanish; possibly conspecific with Datura inoxia Mill.
Synonyms: Datura meteloides A.DC.
Jepson eFlora Author: Michael H. Nee
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Datura wrightii

botanical illustration including Datura wrightii

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Citation for this treatment: Michael H. Nee 2012, Datura wrightii, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 20, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora,, accessed on April 20, 2024.

Datura wrightii
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©2013 Neal Kramer
Datura wrightii
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©2003 Michael Charters
Datura wrightii
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©2009 Barry Breckling
Datura wrightii
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©2019 Vernon Smith
Datura wrightii
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©2022 California Academy of Sciences

More photos of Datura wrightii
in CalPhotos

Geographic subdivisions for Datura wrightii:
NCoRI, c&s SNF, Teh, GV, CW, SW, D
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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).


Data provided by the participants of the  Consortium of California Herbaria.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).