Porophyllum woodii (Compositae: Heliantheae: Pectidinae), a new species from Prov. Burnet O’Connor, Departamento de Tarija, Bolivia, is described and illustrated. This new species is distinctive in that it is apparently the largest shrubby species in South America, with flowering plants up to 1.5 m tall, possessing alternate, longlinear, spreading to recurved leaves, solitary terminal capitula with phyllaries with two more-or-less even rows of linear glands, and about 40 – 45 florets per capitulum.