Annual or biennial herb, prostrate, without hairs; stems 5–30 cm long. Basal leaves petiolate, to 10 cm long, deeply pinnately divided with pinnately incised lobes; stem leaves becoming less divided. Inflorescence shorter than leaves at maturity. Sepals c. 1 mm long, persistent; petals c. 1 mm long, white; stamens usually 6; style c. 0.5 mm long. Fruit reniform, 2–3 mm long, 3.5–4 mm wide, base notched, apex acute, somewhat constricted at septum, not separating into 2 portions; valve surface with prominent ridges and peaks; pedicels 1.5–2 mm long, thick. Flowers spring–summer.
GleP, VVP, GipP, OtP, CVU, OtR. Also naturalised SA, Tas. Apparently an uncommon weed in Victoria, with recent records only from Dimboola and Portland areas, Camperdown and western Melbourne suburbs.
