Perennial herb, up to 1 m high. Stems long, thin, woody, thinly greyish-white, woolly, closely leafy. Leaves mostly 10-20 mm long, becoming smaller upwards, lanceolate or oblong-lanceolate, spreading or later deflexed, mucronate, base broad, subcordate-clasping, margins ± reflexed, crisped or not, both surfaces thinly greyish-white, woolly. Capitula heterogamous, ± 2.5 x 2 mm, cylindric, base ± woolly, many in compact corymbose panicles; involucral bracts in 4 series, graded, imbricate, oblong, silvery pellucid, apex rounded, opaque, crisped. Receptacle fimbrils exceeding ovaries. Flowers 12-21. Flowering time Dec., Jan. Pappus of many bristles. Cypselae 0.5 mm long, cylindric.
Like H. tenuiculum but bracts silvery to white.