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Plant Form: Erect perennial herb.
Size: 20-80 cm tall.
Stem: Blue-green with whitish bloom.
Leaves: Highly variable, often deeply lobed, have strong mustard smell when crushed. Rosette leaves only present during seedling phase.
Flowers: With four yellow to pale yellow petals on a stalk, typical Mustard family (Brassicaceae) type flowers.
Fruit and Seeds: Narrow 2-6 cm long pods with pointed tip, with slight constrictions around seed sections as it matures, with numerous small seeds in rows.
Habitat: Dunes, scrublands, roadsides, wastelands, stream banks, railway lines.
Distinguishing Features: Distinguished from Brassica species by having a stalk at the base of fruit and from other wall rockets (Diplotaxis species) by having 2 rows of seeds.