Jepson eFlora: Taxon page
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Datura ferox

Higher Taxonomy
Family: SolanaceaeView DescriptionDichotomous Key

Common Name: NIGHTSHADE FAMILY
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.
Species In Genus: +- 13 species: warm regions, especially Mexico; several ornamental, some source of drugs. Etymology: (Hindu: ancient name) Toxicity: All species. TOXIC.

Datura ferox L.
NATURALIZED
Habit: Annual < 6 dm. Stem: +- glabrous to sparsely hairy. Leaf: 10--20 cm, generally deeply wavy-lobed. Flower: erect; calyx 2--2.5 cm, angled toward base, lobes 2--4 mm; corolla 4.5--5 cm, glabrous, white or pale blue-purple, lobes 2--4 mm, tips short, narrow; filaments 2 cm, anthers 3 mm; style 2.5 cm. Fruit: 4-valved, erect, 25 mm wide; prickles few, 8--22 mm, stout. Seed: +- 4 mm, black. Chromosomes: n=12.
Ecology: Disturbed areas; Elevation: < 200 m. Bioregional Distribution: n SNF (Amador Co.), n SnJV, SCoRO; Distribution Outside California: native to Mexico, southern South America. Flowering Time: Apr--Jun Note: Hybridizes with Datura stramonium.
eFlora Treatment Author: Michael H. Nee
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Previous taxon: Datura discolor
Next taxon: Datura stramonium

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Citation for this treatment: Michael H. Nee 2016. Datura ferox, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=22381, accessed on May 05, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 05, 2016.


Geographic subdivisions for Datura ferox:
n SNF (Amador Co.), n SnJV, SCoRO;
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.