Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Michael Nee

Annual to shrub
Leaves 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, alternate corolla lobes; ovary superior, generally 2-chambered, style 1
Fruit: berry or capsule, 2–5-chambered
Genera in family: 75 genera, 3000 species: worldwide, especially ± tropical; many alien weeds in CA; many cultivated for food, drugs, or ornamental (potato, tomato, peppers, tobacco, petunia); many TOXIC.



Annual to subshrub, ± glabrous or hairs simple, ill-smelling
Leaf entire to deeply lobed
Inflorescence: flowers solitary in branch forks
Flower: calyx circumscissile near base, leaving a ± rotate collar in fruit; corolla funnel-shaped, white or purplish, lobes 5(10); filaments attached below middle of corolla tube; ovary 2- or 4-chambered
Fruit: capsule, leathery or ± woody, generally prickled; valves 2–4, or indefinite
Seeds ± flat, black, brown, grayish brown, or tan
Species in genus: ± 13 species: warm regions, especially Mex
Etymology: (Hindu: ancient name)
All species. HIGHLY TOXIC; several ornamental, some source of drugs.


D. ferox L.

Annual < 6 dm
Stem ± glabrous
Leaf 10–20 cm, generally deeply wavy-lobed
Flower erect; calyx 2–2.5 cm, 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 25 mm wide; prickles few, 8–22 mm, very stout
Chromosomes: n=12
Ecology: Disturbed areas
Elevation: < 200 m.
Bioregional distribution: n Sierra Nevada Foothills (Amador Co.), n San Joaquin Valley
Distribution outside California: native to Mexico, s S.America
Hybridizes with D. stramonium.

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bioregional map for DATURA%20ferox being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Datura ferox
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Overlay Consortium of California Herbaria specimen data by county on this map
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