Stem herbaceous, branched, silvery, the flowering branches ending in long, nude, one-headed peduncles; leaves simple and tapering at base, petioled, linear-oblong, repandcrenate, with sometimes a pair of small lateral lobes, 3-5-nerved, cobwebby or glabrous above, silvery tomentose beneath; inv. cobwebby, the outer scales with linear, tomentose points.