Sinapis is a small genus of annual and perennial flowering plants in the mustard family, Brassicaceae (order Brassicales). The genus was established by Linnaeus in his Species Plantarum (1753) and encompasses plants commonly known as mustards. Three species are currently accepted by Plants of the World Online: Sinapis alba (white mustard), Sinapis flexuosa, and Sinapis pubescens. Several species previously placed in Sinapis — most notably charlock or wild mustard — have been reclassified or synonymised over time, reflecting the historically fluid boundaries between Sinapis and the closely related genus Brassica.
Sinapis alba, white mustard, is by far the best-known member of the genus. It is widely cultivated for its seeds, which are ground to produce mild yellow mustard condiment, and for its young leaves, which are used as a salad and cooking green. The plant produces characteristic small yellow four-petalled flowers typical of the Brassicaceae, and elongated seed pods (siliques) with a distinctive flattened beak. Sinapis pubescens is a perennial species native to the Mediterranean region, while Sinapis flexuosa occurs around the Mediterranean basin and western Asia.
Etymology
The genus name Sinapis derives from the Greek sinapi (σίναπι), the ancient Greek word for mustard, which in turn is thought to be of Egyptian origin. The name was used by Theophrastus and Dioscorides for the mustard plant and was adopted by Linnaeus when he formally described the genus in 1753.
Distribution
Sinapis species are native primarily to the Mediterranean region, western Asia, and parts of Europe. Sinapis alba (white mustard) has been widely introduced and naturalised across temperate regions worldwide through cultivation, and is now found throughout Europe, North America, and beyond. Sinapis pubescens is largely restricted to the Mediterranean basin.
Cultivation
Sinapis alba (white mustard) is an economically important crop grown for its seeds, which are pressed for mustard oil or ground to produce condiment mustard. It is also grown as a salad crop (mustard greens), a cover crop to improve soil structure, and a green manure. The plant grows rapidly and thrives in temperate climates with well-drained soils.
History
The genus Sinapis was formally established by Linnaeus in Species Plantarum in 1753. Mustard plants have been cultivated and used medicinally since antiquity; the ancient Greeks and Romans used sinapi both as a condiment and as a remedy. Over subsequent centuries, taxonomic revisions have moved several species between Sinapis and Brassica, most notably Sinapis arvensis (charlock), whose placement has shifted between the two genera in different classifications.
