It has fleshy, shiny, dark green leaves ranging from six to 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 funnel-shaped 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 15cm long. Pods are often found in pairs, joined at the bases to form an angled wing-like 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. Image White flower variant Image Seed pods Ecology Rubber vine may be found on a wide range of soils in the tropics.