Argentipallium

Perennial herbs, branches covered with greyish or silvery, silky or cottony indumentum. Leaves entire, sessile, alternate. Capitula solitary and terminal, or in loose inflorescences, homogamous or heterogamous, discoid or disciform; involucral bracts multiseriate, papery; outer bracts brown and lacking a petaloid lamina or obscured by a dense indumentum of cottony or woolly hairs, inner bracts each with a long, white lamina; receptacle convex, glabrous, ebracteate. Florets all bisexual or the outermost female; corolla of bisexual florets regularly 5-lobed; anthers 5, caudate; style branches truncate or rounded, shortly papillate. Cypselas subterete, c. 1 mm long, papillate, with a conspicuous annular base; pappus of barbellate or plumose bristles, shortly united at base (sometimes absent from female florets).