Perennial, erect, glabrous, bushy, leafy shrub, 0.4–1 m tall, with twining young branches. Leaves are glaucous-green, entire, coriaceous, lanceolate to elliptic, 2–4 cm long and 0.5–1.2 cm wide. The inflorescence is dense and globose, composed of numerous flowers forming axillary umbels. Flowers are greenish-white, about 10 mm across. Calyx is pubescent and five-lobed. Corolla is rotate and glabrous, with five lobes; the tube is short and lobes are erect, oblong, and canaliculate. Fruits are solitary, ovoid, tapering to rostrate, smooth and hard follicles, about 5 cm long and 2–2.5 mm wide.