Published in in Trud. Kom. Vys. Uchr., Kiev No. 1 (Enum. Pl. Podol.) 14(1860).
Rhamphospermum nigrum, 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.