A small bushy much-branched herb with stems up to ± 2 dm. long. Lvs ± 6-15 × 4-10 mm., of oblong to obovate order, us. diverse on the same plant, sparingly toothed to subpinnatifid, glab. to hairy. Capitula ± 5 mm. diam., subglobose, solitary, sessile or subsessile, axillary. Phyll. broad-oblong, membr. ♀ ∞, corolla minute, 4-lobed. Perfect florets few, corolla subcampanulate, 4-lobed. Achenes tetragonous, slightly hairy.

Prostrate to (rarely) erect annual or facultative perennial, spreading to c. 25 cm diam. and/or 20 cm high; adventitious roots sometimes produced from lower nodes; branches glabrescent to moderately (rarely densely) cottony, if glabrescent then axils and young growing tips usually with some cottony hairs. Leaves obtrullate to spathulate, 3-12(-27) mm long, 1.5-6(-11) mm wide, variably serrate to shallowly incised; surfaces glabrescent to densely cottony, with scattered resin droplets. Inflorescence a solitary sessile or subsessile capitulum, (peduncles to c. 1 mm long), appearing axillary or leaf opposed. Capitula at anthesis hemispherical to subglobular, 1.5-5 mm diam.; involucral bracts obovate with erose membranous margins, 1-1.6 mm long; receptacle convex; corollas of female florets 0.1-0.25 mm long; corollas of bisexual florets 0.3-0.4 mm long. Fruiting heads breaking up before stems senesce. Cypselas narrowly obcuneate (length-width ratio c. 3-4), 0.6-1.5 mm long, truncate or obtusely rimmed and very slightly impressed at the apex, the 4-6(-8) ribs with short ascending bristles, uniting in the distal quarter to half into a pale, pithy apical portion, faces between ribs with vesicular trichomes in a vertical row or scattered (rarely with scattered hairs), hairs antrorsely appressed to spreading, 0.15-0.2 mm long, acute or obtuse (not inrolled or thickened) at apex.

Procumbent, slender, aromatic, glabrous or sparsely hairy annual. Stems terete, much-branched from base and above, (3)-5-25 cm long. Lvs glandular, oblong, elliptic-oblong to spathulate, acute to obtuse, narrowed to base but petiole usually indistinct, sometimes slightly amplexicaul, entire or with few coarse teeth, 3-15-(20) mm long. Capitula usually sessile, sometimes shortly pedunculate, usually solitary, rarely appearing paired, 2-4-(5) mm diam.; florets 30-numerous; ♀ florets in 2-4 rows. Achenes 0.8-1.4 mm long, with faces dark brown and pale brown ribs extending ± to apex.