Sinapis nigra
PlantsFamily: Brassicaceae · Genus: Sinapis

Walther Otto Müller · public_domain
About
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.
Summary from Wikipedia
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Growing details and traits for Sinapis nigra in the Library.
No cultivars in the Library yet — the full profile above covers the species itself.