Pectis
x = 12.
Herbs; herbage often strongly scented. Stems prostrate to erect, simple to much‑branched. Leaves opposite, linear to elliptic or obovate, proximally ciliate with slender setae, distally usually entire, glabrous or hairy, punctate abaxially and/or on the margins with pellucid glands containing scented or unscented essential oils. Capitulae radiate, solitary or in congested to openly diffuse cymose capitulescences; peduncles very short to elongated, usually with alternate, scale‑like bracts. Involucres cylindric to campanulate, 2--8+ mm diameter; phyllaries 3‑‑21 in 1 series, distinct and falling individually, each with a ray cypsela, or cohering proximally and falling as a group enclosing all the cypselae of the capitulum, convex, narrowly to broadly hyaline-margined, indurate-keeled, glandular‑punctate, often apically ciliolate. Receptacles flat to hemispheric, naked. Ray florets pistillate and fertile, equal in number to the phyllaries, and inserted on phyllary bases; corollas yellow, often reddened abaxially, often drying white to purplish; laminas elliptic, entire or 2‑ or 3‑lobed, glabrous or proximally glandular‑puberulent. Disc florets 1‑‑100 or more, usually perfect; corollas yellow, sometimes drying white to purplish, radial or more commonly bilateral with a 1‑lobed anterior lip and a 3‑ or 4‑lobed posterior lip, glabrous or proximally glandular‑puberulent; anthers with rounded or subcordate bases and very short, rounded or emarginate apical appendages; styles included to long‑exserted, the tips papillose, the branches very short. Cypselae cylindrical to narrowly clavate, ribbed or angled, blackish or dark brown, variously puberulent to pilose with bicellular trichomes; pappi of awns, bristles, or scales, sometimes reduced to a crown.