Climber to 10m, glabrous quadrangular lenticellate branchlets, glabrous leaves to 135mm x 40mm, axillary & terminal glabrescent panicles to 200mm long with 6 glabrescent bracts to 30mm x 12mm, green flowers, 5-lobed 10-ribbed calyx with bifid lobes & teeth to 5mm long, tube to 8mm long