Description: Introduced, cool season, annual or biennial, hairy, erect herb 25–90 cm tall. Basal leaves are to 11 cm long, pinnatifid with 4 pairs of triangular lobes, petiolate, not persistent; upper leaves entire or sagittate with the terminal lobe oblong or lanceolate, petiolate. Flowerheads are paniculate. Sepals are 4–5 mm long and bristly. Petals are 6–10 mm long, yellow to pale yellow. Style plus clavate stigma 1–3.5 mm long. Siliqua are linear, spreading, 4–10 cm long, 1–2 mm wide, thick-walled; pedicel spreading, 3–10 mm long. A native of W Asia and the Mediterranean, it is a widespread weed of disturbed soils. Date: 26 September 2014, 08:30. Source:
Sisymbrium orientale flower2. Author:
Harry Rose from South West Rocks, Australia.