Annual cobwebby-wooly herb. Branches not winged. Basal leaves petiolate, pinnately lobed or dentate, with a thin cartilaginous edge; cauline leaves sessile, semi-amplexicaul, not decurrent, oblong to oblong-ovate, coarsely dentate to undulate-entire. Heads oblong-ovoid, sulphur-yellow. Involucral bracts ovate, yellowish green in the middle, white cobwebby-woolly along the margins, ending in dark-brown, about 22 mm long spines; the spines each with 2-4 lateral spinules on each side.