Arabidella nasturtium (F.Muell.) E.A.Shaw

Herb, many-stemmed, to 50 cm tall; stems terete or finely fluted, glabrous. Leaves basal and cauline, entire to multisect, slender, up to 3 cm long. Inflorescence dense. Sepals erect to deflexed, 1.5–3.5 mm long, tending to be dimorphic. Petals 2–4.5 mm long, yellow. Style 0.5–1 mm long. Siliqua linear, 6–25 mm long, 0.5–1.5 mm wide, straight or curved; valves convex, may be compressed between seeds, with distinct midvein; pedicels spreading, 6–10 mm long. Seeds ovoid to oblong, 0.7–1 mm long.