Millettia borneensis Adema, Blumea 45 (2000)

Latin for 'from Borneo'.

Upper canopy tree up to 46 m tall and 119 cm dbh. Stipules ca. 4.5 mm long. Leaves alternate, compound, leaflets opposite, penni-veined, slightly hairy, sometimes whitish below. Flowers ca. 10 mm diameter, blue-purple, placed in racemes. Fruits ca. 70 mm long, green, flattened pods.

In undisturbed mixed dipterocarp or swamp forests up to 100 m altitude. Growing along rivers on sandy soils, but also on limestone. In secondary forests usually present as a pre-disturbance remnant tree.

Peninsular Malaysia, Sumatra, Borneo (Sarawak, Brunei, Sabah, West- and East-Kalimantan).

Local names
Borneo: Babai, Biansu, Binsu, Marbahai, Merbatrai, Tongudou.