6-50 cm tall, stoloniferous. Roots adventitious, rooting at the lower nodes. Leaves petiolate, pinnate; leaflets lanceolate to oval; margin serrate, laciniate; leaf bases sheathing. Peduncles lateral and terminal, 1-5 cm long. Involucre of 5-8 linear to lanceolate bracts, margin white, entire to toothed. Rays 10-15, unequal, 1-2 cm long. Involucel of 5-8 linear to lanceolate bractlets. Calyx teeth minute. Fruit ovoid, 1.5 mm long; stylopodium conical; styles 1 mm long; ridges embedded in thick, corky pericarp; furrows many vittate; vittae small, deeply embedded.