Herbs annual, erect. Stem white villous. Petiole 1-1.5 cm, long gray hairy; leaf blade oblong or oblong-obovate, papery, long white hairy and ciliate, narrowing toward base, margin undulate, apex acute or obtuse. Heads silvery; bracteoles purple, triangular-lanceolate, much longer than bracts. Tepals rigid after anthesis. Filaments connate into a tube, 5-parted at apex. Styles linear, shorter than tube of stamens; stigmas 2, furcate. Utricles subglobose. Fl. and fr. Feb-Jun. 2n = 26.
Prostrate, decumbent or erect herb, up to 350 mm tall. Stems with white silky hairs. Leaves lanceolate to elliptic. Inflorescences terminal, globose to spicate as flowers mature. Flowers 5 or 6 mm long, bracteoles papery; white.
Perennial herb, up to 0.35 m high. Stems procumbent, decumbent or erect; much branched; white silky hairy. Leaves opposite; blade elliptic to obovate, 15-45 x 5-13 mm, decurrent, apex acute, margins entire, upper surface glabrous to thinly pilose, lower surface thinly to densely hairy with long, whitish hairs. Flowers: inflorescence terminal, sessile above uppermost pair of leaves, globose to spicate as flowers mature; bracteoles membranous; perianth 5-6 mm long, white; Oct.-Jun.