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Solanum americanum

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: SolanumView DescriptionDichotomous Key

Common Name: NIGHTSHADE
Habit: Annual to shrub, vine or not, prickly or not, often glandular. Leaf: alternate to +- opposite, often unequal, entire to deeply pinnately lobed. Inflorescence: panicle or umbel-like, often 1-sided. Flower: calyx +- bell-shaped; corolla +- rotate, white to purple (yellow), lobes generally of different color toward base of midrib, generally without spots at base; anthers free, > filaments, oblong or tapered, opening by 2 pores or short slits near tip, in age often splitting to base; ovary 2-chambered, style 1, generally +- straight, stigma head-like. Fruit: berry, generally spheric, fleshy (or dry, capsule-like). Seed: many, compressed, generally reniform.
Species In Genus: +- 1500 species: worldwide, especially tropical America. Etymology: (Latin: quieting, from narcotic properties) Toxicity: many TOXIC. Note: Many cultivated for food (including potato, Solanum tuberosum), ornamental; Solanum dimidiatum in California an urban weed. See Lycopersicon for other taxa recently included here.

Solanum americanum Mill.
NATIVE
Habit: Annual to subshrub, 3--8 dm, hairs +- 0 or short, +- appressed or curved, nonglandular. Leaf: 2--15 cm, ovate, entire to coarsely wavy-toothed. Inflorescence: umbel- or raceme-like. Flower: calyx 1--2 mm, lobes in fruit recurved; corolla 3--6 mm wide, deeply lobed, white; anthers 1.4--2.2 mm; style 2.5--4 mm. Fruit: 5--8 mm, black or +- green. Seed: 1--1.5 mm. Chromosomes: n=12.
Ecology: Open, often disturbed places; Elevation: < 1000 m. Bioregional Distribution: CA-FP, DMoj (uncommon); Distribution Outside California: to Canada, eastern United States, Mexico. Flowering Time: Apr--Nov Note: Much like Solanum nigrum.
Synonyms: Solanum nodiflorum Jacq.
eFlora Treatment Author: Michael H. Nee
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botanical illustration including Solanum americanum

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Citation for this treatment: Michael H. Nee 2016. Solanum americanum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=44818, 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.


Solanum americanum
click for enlargement
© 2009 Steve Matson
Solanum americanum
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© 2005 George W. Hartwell
Solanum americanum
click for enlargement
© 2009 Steve Matson
Solanum americanum
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© 2007 Neal Kramer
Solanum americanum
click for enlargement
© 2005 George W. Hartwell
Solanum americanum
click for enlargement
© 2009 Steve Matson

More photos of Solanum americanum in CalPhotos


Geographic subdivisions for Solanum americanum:
CA-FP, DMoj (uncommon);
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.