A small deciduous tree growing to 5–12 m tall, with a broad crown of level or arching branches. The bark is dark greenish grey in colour and striped vertically as it gets older. The leaves are tripinnate, 20–45 cm long and 12–25 cm broad, divided into 6–12 pairs of pinnae, each with 20–30 pairs of leaflets; the leaflets are oblong, 1–1.5 cm long and 2–4 mm broad. The flowers are produced throughout the summer in dense inflorescences, the individual flowers with no petals but a tight cluster of stamens 2–3 cm long, white or pink with a white base, looking like silky threads. They have been observed to be attractive to bees, butterflies and hummingbirds. The fruit is a flat brown pod 10–20 cm long and 2–2.5 cm broad, containing several seeds inside.

Carminative, digestive, sedative and tonic (flower heads); anodyne, anthelmintic, carminative, discutient, diuretic, oxytocic, sedative, stimulant, tonic, vermifuge and vulnerary (stem bark)

Plants for a Future

In the treatment of insomnia, irritability, breathlessness and poor memory (flower heads); in the treatment of insomnia, irritability, boils and carbuncles, to injuries and swellings (stem bark)