Vines (herbaceous or suffrutescent), 50-500+ cm. Stems usually 1, ± twining and climbing. Leaves cauline; alternate; petiolate; blades palmati-pinnately nerved, ovate to lanceolate, margins dentate to denticulate, faces ± villous. Heads radiate [discoid], in ± corymbiform arrays or borne singly. Calyculi of 10-20 bractlets. Involucres hemispheric or campanulate to turbinate or cylindric, [4-]12-20(-25+) mm diam. Phyllaries persistent, [8-]12-26+ in (1-)2 series, erect, distinct, lance-linear to linear, equal or subequal, margins membranous (apices sometimes black). Receptacles flat, foveolate, epaleate. Ray florets 6-15+, pistillate, fertile; corollas orange to ± brick-red. Disc florets [12-]40-80+, bisexual, fertile; corollas orange, tubes longer than campanulate throats, lobes 5, erect to reflexed, lance-ovate to lance-linear; style branches stigmatic in 2 lines, apices with lance-attenuate appendages. Cypselae ± cylindric, weakly ribbed, puberulent; pappi persistent, of 100-120+, white, barbellulate bristles.