It has fleshy, shiny, dark green leaves ranging from six to 1 10cm long and up to five centimetres broad. They are arranged in pairs opposite each other on long smooth succulent stems. When broken the stems exude a milky sap. Rubber vine has large, showy, white to lilac flowers with a broad funnelshaped tube and five spreading lobes. The tubular portion is sometimes tinged with red.
Flowers are about five cm across.
Seeds form in large pods about 1 15cm long. Pods are often found in pairs, joined at the bases to form an angled winglike shape on a short stalk. The pods distinguish it from similar native plants. Each pod contains numerous seeds, each with a tuft of long white silky hairs at one end. Ecology Rubber vine may be found on a wide range of soils in the tropics.