| Rhamphospermum nigrum | 
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| Scientific classification | 
| Kingdom: | Plantae | 
 
| Clade: | Tracheophytes | 
 
| Clade: | Angiosperms | 
 
| Clade: | Eudicots | 
 
| Clade: | Rosids | 
 
| Order: | Brassicales | 
 
| Family: | Brassicaceae | 
 
| Genus: | Rhamphospermum | 
| Species: | R. nigrum | 
| Binomial name | 
| Rhamphospermum nigrum 
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| Synonyms | 
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Brassica brachycarpa P.CandargyBrassica bracteolata Fisch. & C.A.Mey.Brassica elongata var. longipedicellata Halácsy ex FormánekBrassica nigra (L.) W.D.J.KochBrassica nigra var. abyssinica A.BraunBrassica nigra var. bracteolata (Fisch. & C.A.Mey.) Spach ex Coss.Brassica nigra f. breviflora Zapał.Brassica nigra var. carneodentata KuntzeBrassica nigra f. condensata Hausskn.Brassica nigra f. dentifera Zapał.Brassica nigra f. glabrata Zapał.Brassica nigra f. hispida O.E.SchulzBrassica nigra subsp. hispida (O.E.Schulz) GladisBrassica nigra proles persoonii Rouy & FoucaudBrassica nigra var. subglabra KuntzeBrassica nigra var. torulosa (Pers.) Alef.Brassica nigra proles turgida (Pers.) Rouy & FoucaudBrassica nigra var. turgida (Pers.) Alef.Brassica nigra var. vulgaris Alef.Brassica persoonii Rouy & FoucaudBrassica sinapioides RothBrassica sinapioides Roth ex W.D.J.KochBrassica sinapis NouletBrassica turgida Rouy & FoucaudCrucifera sinapis (L.) E.H.L.KrauseErysimum glabrum C.PreslMelanosinapis communis Spenn.Melanosinapis nigra (L.) Calest.Mutarda nigra (L.) Bernh.Raphanus sinapis-officinalis CrantzSinapis bracteolata G.DonSinapis erysimoides Roxb.Sinapis gorraea Buch.-Ham. ex Wall.Sinapis nigra L.Sinapis nigra var. torulosa (Pers.) MératSinapis nigra var. turgida (Pers.) MératSinapis orgyalis Willd. ex Ledeb.Sinapis persoonii (Rouy & Foucaud) A.Chev.Sinapis torulosa Pers.Sinapis turgida A.Chev.Sinapis turgida Pers.Sisymbrium nigrum (L.) Prantl
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Rhamphospermum nigrum (syns. Brassica nigra and Sinapis nigra), black mustard, is an annual plant native to cooler regions of North Africa, temperate regions of Europe, and parts of Asia. It is cultivated for its dark-brown-to-black seeds, which are commonly used as a spice.