Description

Siris Tree (Albizia lebbeck) is a species of Albizia, native to Indomalaya, New Guinea and Northern Australia and widely cultivated and naturalised in other tropical and subtropical regions. English names for it include lebbeck, lebbek tree, flea tree, frywood, koko and woman's tongue tree. The latter name is a play on the sound the seeds make as they rattle inside the pods. Being one of the most widespread and common species of Albizia worldwide, it is often simply called siris, though this name may refer to any locally common member of the genus.

Characteristics:

It is a tree growing to a height of 18–30 m tall with a trunk 50 cm to 1 m in diameter. The leaves are bipinnate, 7.5–15 cm long, with one to four pairs of pinnae, each pinna with 6–18 leaflets. The flowers are white, with numerous 2.5–3.8 cm long stamens, and very fragrant. The fruit  is a pod 15–30 cm long and 2.5-5.0 cm broad, containing six to twelve seeds. Medium to large tree with gray-brown bark; leaves bipinnate, the primary leaflets subopposite, 2-4 pairs; ultimate leaflets opposite, 6-8 pairs, oblong, slightly asymmetric, blunt, 2.5-4.5 cm long. Flowers mimosa-like, in showy, rounded clusters near stem tips, 5-6 cm across, cream or yellowish-white, each flower with numerous long stamens. Fruit a flat, linear pod, to 30 cm long, with many seeds; dried pods persistent after leaf-fall, often heard rattling in the wind.

Medicinal Uses:

Its uses include environmental management, forage, medicine and wood. It is cultivated as a shade tree in North and South America. In India and Pakistan, the tree is used to produce timber. Wood from Albizia lebbeck has a density of 0.55-0.66 g/cm³ or higher.