Perennials or subshrubs, 10-80 cm (± succulent). Stems erect to sprawling, branched from bases or throughout. Leaves cauline; opposite; sessile; blades filiform to linear, margins entire, faces glabrous or glabrescent. Heads radiate, (5-25) in corymbiform arrays. Involucres obconic, 2.5-5+ mm diam. Phyllaries persistent, 4-5 in 1 series (lance-elliptic to ovate or orbiculate, membranous to subscarious). Receptacles convex, epaleate. Ray florets 3-6, pistillate, fertile; corollas yellow. Disc florets 18-30(-60)[-100+], bisexual, fertile; corollas yellow, tubes shorter than or equaling cylindric or funnelform throats, lobes 5, deltate to lance-deltate. Cypselae ± cylindric (10-15-ribbed); pappi persistent, of 20-25+ barbellulate bristles. x = 18.