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Phyllaries appressed-imbricate, scarious-membranous with subhyaline margins, often minutely pectinate-ciliate about the apex, puberulous, soon glabrescent, sparsely glandular, the outer from c. 2 mm. long, the inner to c. 6 mm. long, ovate-oblong to lanceolate, ± abruptly narrowed or rounded mucronate to tapering-obtuse at the apex.
Leaves opposite, mostly subsessile, petiolate in larger leaves, mostly 5–21 x 1–6 cm., narrowly elliptic, tapering to an acute apex and a ± narrowly cuneate base, margins serrate with callose-tipped teeth, lamina sparsely pilose sometimes glabrescent, the hairs patent flagelliform with a bristle-like terminal cell.
Stems annual, 1-several, herbaceous becoming somewhat woody below, leafy, branching above, puberulous, tomentose on young growth, glabrescent below; indumentum of ± patent flagelliform hairs.
Capitula small, numerous in dense many-capitulate subglobose clusters; capitula mostly subsessile, or on stalks to c. 3 mm. long.
Corollas purple or mauve, 6–8 mm. long, narrowly funnel-shaped, sparsely glandular, otherwise glabrous.
An erect bushy suffrutescent perennial herb to c. 30 cm. tall from a woody rootstock.
Involucres 4–6 x 3–5 mm., narrowly ellipsoid-or obovoid-campanulate.
