Sometimes scandent herbaceous plant. Serrate or serrate-dentate leaves to 110mm x 37mm. Male panicles to 43 flowers, female panicles to 35-40 flowers, pilose panicles to 80mm wide, pistillate heads to 8mm x 3.5mm, corollas whitish to 3.8mm x 1.5mm, hermaphrodite corollas 5.5mm long, staminate whitish corollas to 5.4mm x 1.2mm. Achenes to 4.2mm with bristles to 1.7mm.