Heliophila thunbergii Steud.

Annual herbs up to 90 cm high, unbranched in the lower part or with several erect or ascending stems. Leaves 1-10 cm long, pinnately lobed with 3-5 pairs of lobes; lobes short or long, linear or filiform, entire or rarely lobed again; minutely stipulate; sparsely to densely hairy, especially on the upper surface. Racemes lax. Pedicels shortly pubescent when young, minutely stipulate; 1-2 cm long in flower; 1.5-3.5 cm long in fruit, recurved or recurved-spreading. Sepals 3.5-5 mm long, 1.3-2 mm broad, narrowly oblong, semi-persistent; the outer 2 cucullate; the inner 2 saccate. Petals 5.5-10 mm long, 3-7.5 mm broad, obovate or obovate-circular, usually with an appendage, rarely without. Filaments 2.8-3.5 mm and 3.3-3.8 mm long, the short ones usually with an appendage. Ovary narrowly oblong with a short, stout style and capitate stigma; in one variety the style becoming swollen in the young developing ovary; ovules (5-)8-18. Fruits 2.3-5.5 cm long, 4.5-9 mm broad, oblong or linear-oblong with straight margins; valves flat, 1-nerved; style 1.5-5 mm long, stout, tapering or thick, cylindrical. Seeds 3.5-5.8 mm in diameter, sub-circular with a broad wing and a deep narrow sinus.