Jepson eFlora: Taxon page
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Nicotiana attenuata

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: NicotianaView DescriptionDichotomous Key

Common Name: TOBACCO
Habit: Annual to small tree. Leaf: +- basal or not; margin entire, +- wavy or not. Inflorescence: raceme or panicle, terminal; lower bracts leaf-like. Flower: calyx 5-lobed, +- enlarging, not fully enclosing fruit; corolla generally radial, generally funnel-shaped to salverform; stamens 5, equal or 1 smaller. Fruit: septicidal capsule. Seed: many, minute, angled.
Species In Genus: +- 60 species: generally America; Nicotiana tabacum L. widely cultivated, tobacco of commerce. Etymology: (J. Nicot, said to have introduced tobacco to Eur, 1530--1600) Toxicity: Seriously TOXIC to livestock.

Nicotiana attenuata Torr. ex S. Watson.
Habit: Annual 5--15 dm, +- glandular-hairy. Leaf: 3--10 cm, petioled; basal elliptic to ovate; cauline reduced. Inflorescence: bracts < 30 mm, linear. Flower: calyx 6--10 mm, lobes < tube, +- equal, triangular, acute, pock-marked; corolla +- salverform, tube 20--27 mm, +- green, pink-tinged, limb 4--8 mm wide, white; stamens unequal, attached below tube middle. Fruit: 8--12 mm.
Ecology: Open, well-drained slopes; Elevation: 200--2800 m. Bioregional Distribution: CA (exc coast); Distribution Outside California: to British Columbia, Montana, New Mexico, northwestern Mexico. Flowering Time: May--Oct
eFlora Treatment Author: Michael H. Nee
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botanical illustration including Nicotiana attenuata


Citation for this treatment: Michael H. Nee 2016. Nicotiana attenuata, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 30, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 30, 2016.

Nicotiana attenuata
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© 2016 Neal Kramer
Nicotiana attenuata
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© 1998 Larry Blakely
Nicotiana attenuata
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© 1982 Gary A. Monroe
Nicotiana attenuata
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© 2007 Steve Matson
Nicotiana attenuata
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© 2007 Thomas Stoughton
Nicotiana attenuata
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© 2009 Steve Matson

More photos of Nicotiana attenuata in CalPhotos

Geographic subdivisions for Nicotiana attenuata:
CA (exc coast);
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.
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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.