Annual herb. Stems basal, several, up to 300 mm long, erect or decumbent, simple or ± branched, white-woolly, leafy. Leaves 15-40 x 4-12 mm, oblong-lanceolate to lanceolate, base cordate-clasping, margins flat or crisped-undulate, both sides thinly greyish-white, woolly. Capitula campanulate, 3 x 2 mm, many in dense, woolly clusters in compact, corymbose panicles; involucral bracts in 6 series, backs white-woolly, crisped, bright yellow. Flowers 12-30. Flowering time mainly Oct., Nov. Pappus of many bristles, bases not cohering. Cypselae 0.5 mm long.
Like H. moeserianum but leaves more oblong and stereome on the outermost but one series of bracts longer, ± 2 mm long.