Melanthera biflora is a hardy, sprawling perennial herb that can reach up to 2 m but its stem is not strong and will bend after reaching a certain height. It can scramble and straggle over the ground or climb leaning on other plants for support. The leaves are ovate, shortly tapering at the base. It produces small yellow flower heads with a diametre of about 8-10 mm. The fruits form a dense head.