A perennial, erect or clambering herb up to 200 cm tall, sometimes branched, internodes often longer than 3 cm. Leaves are alternate or opposite, ovate-elliptical, oblong or lanceolate, 1.5-7.5 cm x 0.5-4.5 cm. Spikes up to 5 cm long, partly in the axil of normal leaves, partly in the axil of bracts and often forming a loosely branched paniculate inflorescence. Flowers hermaphrodite or hermaphrodite and female. Tepals are 2-2.5 mm long, stigma 1, entire or obscurely 2-lobed.
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