Vines, to 600+ cm (perennating bases unknown; herbage glabrous). Stems usually 1, scrambling and twining (branched). Leaves cauline; alternate; petiolate; blades palmately nerved, polygonal to ± orbiculate (bases often cordate), margins dentate, faces glabrous. Heads discoid, in corymbiform arrays (terminal or from axils of distal leaves). Calyculi of 1-4(-5) bractlets. Involucres cylindric to weakly turbinate, 2-4 mm diam. Phyllaries persistent, (7-)8+ in 1-2 series, erect, distinct (margins interlocking), lance-linear, ± equal, margins scarious (apices green or yellowish green). Receptacles convex, ± foveolate (socket margins often membranous), epaleate. Ray florets 0. Disc florets 8-25, bisexual, fertile; corollas pale yellow, tubes shorter than campanulate to funnelform throats, lobes 5, recurved, lance-deltate to lanceolate; style branches stigmatic in 2 lines, apices ± truncate (appendages essentially 0). Cypselae ± prismatic, 5-angled, glabrous; pappi readily falling or fragile, of 40-60(-100+), white, barbellulate bristles. x = 10.