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Ray-florets neuter, stamens and style absent or rudimentary, corollas deep-red or creamy-white; ray erect, 3-fid, inner lip wanting; ovary rudimentary, pappus of many narrow scales.
Phyllaries numerous, many-seriate, araneose-lanate to puberulous, at least the outer subulate-aristate with stiff squarrose or recurved apices, or lamina straight and pungent.
Capitula heterogamous, radiate, few-many, solitary and terminal on branches sometimes also subsessile along branches, subtended by leaf-like bracts.
Vegetative indumentum of fine flagelliform hairs each consisting of an appressed filamentous terminal cell borne on a uniseriate many-celled stalk.
Achenes subcylindric, 10-ribbed with numerous stiff white hairs; pappus several-seriate of numerous spreading narrowly lanceolate scales.
Leaves alternate, narrowly oblanceolate to elliptic, somewhat discolorous, densely araneose-lanate on the under surface, gland-dotted.
Anther apical appendages narrowly triangular, theca bases sagittate with tapering-acute fimbriate or ciliolate tails.
Disk-florets deep-red or creamy-white, hermaphrodite and actinomorphic.
Style deeply 2-fid, apices subobtuse with a subdistal fringe of hairs.
Annual herbs, or suffrutices with annual stems from woody rootstocks.
Receptacle deeply alveolate, paleae absent.