Alstonia angustifolia Wallich ex A.DC.

Alstonia angustifolia Wallich ex A.DC.




A. latifolia Ridley, A. beccarii (Benth.) Pichon.

Vernacular Names

Malaysia Itai setapoh, pulai (Peninsular), mergalang (Sarawak).
Indonesia Medang pasir (Bangka), pulai pipit (Palembang).
Vietnam s[uwx]a l[as] h[ej]p, l[aas]c.

Geographical Distributions

Peninsular Malaysia, Singapore, Sumatra, Bangka and Borneo.


Alstonia angustifolia is a small to medium-sized tree and measuring up to 35(-45) m tall. The bole is fluted or with small or steep buttresses and measures up to 70 cm in diametre. The outer bark is smooth, fissured or scaly while the inner bark is yellowish and without latex.

The leaves are usually in whorls of 3, oblanceolate in shape, measuring 4-18 cm x 1.5-7 cm, acuminate, with 10-20 pairs of secondary veins while the petiole is measures 8-30 mm long.

The inflorescence is with many-flowered, measuring 0.5-2 mm long pedicel while the sepal and petal are densely hairy outside. The follicles are smooth.

Ecology / Cultivation

A. angustifolia occurs in primary forest, seasonal peat swamps or hillsides, on sandy or granitic soils at 5-750(-1700) m altitude.

Line Drawing / Photograph



    1. Plant Resources of South-East Asia No. 12 (2): Medicinal and poisonous plants.