Calopogonium caeruleum (Benth.) Sauvalle

A slightly woody vine or creeper. It keeps growing from year to year. It is twining with side branches. It grows 10 m long. The stems are slender and cylinder shaped. The leaves are alternate and have 3 leaflets. The leaflets are papery. They are 5-11 cm long by 3-8 cm wide. The end leaflets are wedge shaped and the side ones unequal at the base. The edges are wavy. The upper surface are dull green and lower leaves are pale green. The flowers are in groups 12-45 cm long with flowers in groups of 4 to 5. The pods are 3-8 cm long by 1 cm wide. They are flattened and squeezed between the seeds. The seeds are almost square and reddish-brown.

Moist thickets, bushy, rocky areas and light forests. Dry to wet thickets; at elevations up to 1,800 metres.

The roots are used for starch.

Can be grown by cuttings or seedlings.