Family: Brassicaceae

Bengali/vernacular name: Kalo Sarisha, Rai Sarisha, Krishnarai.
English name: Black Mustard, True Mustard.

Description of the plant:
BRASSICA NIGRA (L.) Koch. is an erect annual herb, 60-90 cm high. Leaves 10-15 cm long, lower lyrate-pinatisect, the upper oblong-linear. Racemes at flowerig time corymbose, flowers yellow. Pods small, 1-2 cm long, linear, torulose; seeds globose, 1 mm diam. obscurely brown, black near the hilum.

Using information:
Externally oil is stimulant, and internally counter irritant. Seeds are emetic; powdered seeds are used as vesicant and rubefacient. Plaster of mustard is used in gout, sciatica and urticant. Poultices are useful in febrile and inflammatory symptoms, internal congestions, and spasmodic, neuralgic and rheumatic affections. It is largely used as digestive condiment. Leaves are stomachic.

Brassica Nigra

Chemical constituents:
Chief constituent of the seeds is a fixed oil which is composed of glycerides of oleic, stearic and brassic acids. It also contains proteins, a glycoside, sinigrin and an enzyme, myrosin which, in presence of water, hydrolyses sinigrin to allyl isothiocyanate, potassium hydrogen sulphate and glucose. They also contain sinapine sulphocyanate. Goitre prodicing compounds, glucosinols are present in the seeds (Ghani, 2003).

Cultivated in different districts.