Leaves 10–80 mm. long, pinnatisect, or rarely a few simple; segments (0)2–7, filiform, 3–20(35) mm. long, under 1 mm. wide.
Capsule 7–15 mm. long to apex of beak, 5–7 mm. broad, winged mainly on upper suture, of ten set at right angle to pedicel.
Calyx 5–11 mm. long; tube 1–3 x 2–4 mm.; lobes ovate at base with revolute margins, 2–5 mm. long, filiform.
Bracteoles 2–7 mm. long, inserted near middle of pedicel, to just below calyx.
Herb, up to 300 mm tall. Leaves filiform. Flowers white.
Plants (5)10–40(70) cm. tall; stems simple or branched.
Flowers in axils of , or just above, bracts.
Pedicels 1–6 mm. long.
Anthers 2–3 mm. long.
Ovary 3–4 x 1.5–2 mm.
Style 17–35 mm. long.
Stamens inserted.