संस्कृत नाम- सर्षपं शाकम्
Botanical name - Brassica campestris
Description - Annual herb; root tuberous or fusiform; stem erect, stout, simple of branched, 30-100 cm high; leaves alternate, petioled, large, more or less pinnatifid; raceme or corymb; flowers yellow, pedicellate, tetramerous; siliquas 3.7-7.5 cm, glabrous; seeds small, pale or dark, smooth.
Chemical_Constituents- Flowers contain flavonol glycoside brassicoside. Seeds contain epi-progoitrin- major thioglucoside.
Uses - Seeds used in exacerbations, cancer and tumours. Roots emollient and diuretic, juice used in chronic cough and bronchial catarrh