http://oxforddictionaries.com/definition/nigh...
nightshade
Pronunciation: /ˈnʌɪtʃeɪd/
noun
a plant related to the potato, typically having poisonous black or red berries. Several kinds of nightshade have been used in the production of herbal medicines.
• Solanum and other genera, family Solanaceae (the nightshade family): several species, including the European woody nightshade (S. dulcamara), a climber with purple flowers and red berries. The nightshade family includes many commercially important plants (potato, tomato, capsicum peppers, tobacco) as well as a number of highly poisonous ones (henbane, thorn apple). See also deadly nightshade
Origin:
Old English nihtscada, apparently from night + shade, probably with reference to the dark colour and poisonous properties of the berries. Compare with German Nachtschatten

http://www.merriam-webster.com/dictionary/nig...
night•shade noun \-ˌshād\
Definition of NIGHTSHADE
1 : any of a genus (Solanum of the family Solanaceae, the nightshade family) of herbs, shrubs, and trees having alternate leaves, cymose flowers, and fruits that are berries and including some poisonous weeds, various ornamentals, and important crop plants (as the potato and eggplant)
[…]
First Known Use of NIGHTSHADE
before 12th century

http://plants.usda.gov/java/profile?symbol=SOLAN
Solanum L.
nightshade

http://oxforddictionaries.com/definition/sola...
solanum
Pronunciation: /səˈleɪnəm/
noun
a plant of a genus that includes the potato and woody nightshade.
• Genus Solanum, family Solanaceae
Origin:
Latin

http://www.merriam-webster.com/dictionary/solanum
so•la•num noun \sə-ˈlā-nəm, -ˈlä-, -ˈla-\
Definition of SOLANUM
: nightshade 1
Origin of SOLANUM
New Latin, from Latin, nightshade
First Known Use: 1578

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http://www.floraweb.de/pflanzenarten/systemat...
Familie: Solanaceae Juss.; Nachtschattengewächse
Gattung: Solanum L.; Nachtschatten
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Solanum dulcamara L., Bittersüßer Nachtschatten
Solanum nigrum L., Schwarzer Nachtschatten
Solanum nigrum subsp. nigrum L., Gewöhnlicher Schwarzer Nachtschatten
Solanum nigrum subsp. schultesii (Opiz) Wessely, Haariger Schwarzer Nachtschatten
Solanum physalifolium Rusby, Argentinischer Nachtschatten
Solanum physalifolium var. nitidibaccatum (Bitter) Edmonds, Argentinischer Nachtschatten
Solanum sarachoides agg. , Artengruppe Saracho-Nachtschatten
Solanum sarachoides Sendtner s. str., Saracho-Nachtschatten
Solanum triflorum Nutt., Gewöhnlicher Saracho-Nachtschatten
Solanum villosum Mill. s. l., Gelbfrüchtiger Nachtschatten
Solanum villosum subsp. alatum (Moench) Emondsi, Rotfrüchtiger Nachtschatten
Solanum villosum subsp. villosum Mill., Gelbfrüchtiger Nachtschatten

http://blumeninschwaben.de/Zweikeimblaettrige...
Gattung: Nachtschatten (Solanum)

http://flora.nhm-wien.ac.at/Seiten-Gattungen/...
Solanaceae / Gattung Solanum / Nachtschatten

http://www.dwds.de/?qu=Nachtschatten
Nachtschatten
mask.; -s; -
[…]
2. ♦ zu den Nachtschattengewächsen gehörende Pflanzengattung

http://www.duden.de/rechtschreibung/Nachtschatten
Nachtschatten, der
Bedeutung
eine Pflanze

A genus of between 1,500 and 2,300 species nearly worldwide, including several important vegetable crops. Centers of species diversity include the Andes, North America, Mexico, Central America, eastern Brazil, & the Caribbean.
Pictures / Bilder of various species of Solanum

Andere deutsche Namen (nicht vorgeschlagen):
das Solanum (wissen.de, Duden)

Taxonomic citation:
Solanum Linnaeus, Species Plantarum 1: 184. 1753.