Medium to tall, bristly plant. Leaves all pinnately lobed and stalked. Flowers yellow 18 to 25 mm. Fruits 20 to 40 mm.

The pod and the leaf shape are diagnostic features.

Please provide photographs showing the leaves and seed pods as well as the flowers. (RPR)

Grown for its seeds which are used to make the condiment mustard, also as a fodder crop, or as a green manure. It is sometimes found as a casual on rubbish tips, disturbed ground or along field margins.

Flowering June to August sometimes later.

Annual

Widespread but rather local in Britain.

Scarce in Leicestershire and Rutland but may be increasing in our area.

It is listed on the current VC55 Rare Plant Register (Hall and Woodward 2022) as Locally Rare