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Vascular Plants of California
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Solanum nigrum
BLACK NIGHTSHADE


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.
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.
Unabridged Reference: Nee, M. 1999. Synopsis of Solanum in the New World, pp. 285--333 in M. Nee, D.E. Symon, R.N. Lester & J.P. Jessop (eds.), Solanaceae IV, Advances in Biology and Utilization, Royal Botanic Gardens, Kew; Symon 1981 J Adelaide Bot Gard 4:1--367
Solanum nigrum L.
NATURALIZED
Habit: Annual to subshrub, 3--8 dm; hairs +- spreading or curved, glandular and not. Leaf: 4--7 cm, ovate, entire to coarsely wavy-toothed. Inflorescence: raceme-like. Flower: calyx 2--3 mm; corolla 10 mm wide, white, lobes deep; anthers 1.4--2.2 mm; style 3--5 mm. Fruit: 6--8 mm, black. Seed: 1.5--2.5 mm. Chromosomes: n=36.
Ecology: Disturbed places; Elevation: < 200 m. Bioregional Distribution: NCo, n CCo, SnFrB, expected elsewhere; Distribution Outside California: to Washington, eastern United States; native to Eurasia. Flowering Time: Mar--Oct Note: Much like Solanum americanum.
Jepson eFlora Author: Michael H. Nee
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Solanum marginatum
Next taxon: Solanum parishii

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Citation for this treatment: Michael H. Nee 2012, Solanum nigrum, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=44883, accessed on April 18, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 18, 2024.

Solanum nigrum
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©2008 Keir Morse
Solanum nigrum
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©2009 Steve Matson
Solanum nigrum
click for enlargement
©2009 Steve Matson
Solanum nigrum
click for enlargement
©2008 Keir Morse
Solanum nigrum
click for enlargement
©2016 Keir Morse

More photos of Solanum nigrum
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Geographic subdivisions for Solanum nigrum:
NCo, n CCo, SnFrB, expected elsewhere
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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.
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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.
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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).