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Leaf-lamina deeply pedately 3–7(9)-lobed, the lobes (0·5)1–8 cm. long, elliptic to linear, obtuse to acuminate at the apex, margin dentate-mucronate, the teeth up to 1·5 mm., light green; leaf-base subcordate, decurrent into a 2·5–15 mm. long petiole.
Erect annual or biennial herb, up to 500 mm tall. False stipules large, foliaceous. Leaves 3-7(-9)-lobed. Sepals 3.0-4.5 mm, with keeled nerves. Petals present. Flowers green to white.
False stipules 5–20 mm. long, foliaceous, asymmetrical, acute-acuminate and mucronate at the apex.
Capsule 7–10(14) mm. long, ellipsoid to narrowly pyriform, shortly pedicellate, 1-seeded.
Outer corona with the tube (0·5)0·75–1·25 mm. high and the threads (0·5)0·75–1 mm. long.
Persistent cotyledons 2·2–2·7 × 1–1·5 cm., broadly elliptic, with petiole 5–9 mm. long.
Annual or biennial, aromatic, glabrous, erect or decumbent herb up to 50 cm. high.
Cymes 1–2-flowered, with peduncle up to 2 cm. long; bracteoles 2–4 mm. long.
Stamens 5, with the filaments 1–1·5 mm. long and the anthers 0·5–1 mm.
Sepals 2·5–4·5 mm. long, with 2(3) keeled or winged green nerves.
Stem simple or branched from the base, the branches ascending.
Ovary 0·5–1·5 mm. long; styles free, 0·60–2·25 mm. long.
Seed c. 7 × 4 mm., subreniform, alveolate, blackish.
Flowers glabrous, with stipe 1·5–3·5 mm. long.
Inner corona 0·33–0·75 mm. high, cup-shaped.
Hypanthium 1–2 mm. broad.
Petals 2–4·5 mm. long.
Stipules 2–6 mm. long.
Tendrils absent.
