Glandular-scaly, aromatic, annual herb puberulent with septate hairs. Stems prostrate, decumbent, occasionally erect and to c. 40 cm tall, ribbed. Petiole 0.1-1.5-(2.2) cm long, slender; lamina (0.3)-0.5-2.7-(3.5) × 0.15-1.3-(2) cm, ovate to elliptic or oblong, ± pinnatifid, sometimes purple below, puberulent, especially below; glandular scales few to many, yellow; lobes unequal; base narrow-cuneate; apex rounded to acute. Fls axillary, few to many in sessile glomerules, glandular-puberulent. Perianth segments 0.5-0.9 mm long, narrow and not touching, not keeled, mostly green, becoming white in fr. Stamen 1. Fr. incompletely invested by perianth; pericarp easily removed. Seed vertical, 0.5-0.7 mm diam., from ± globose to ± broad-elliptic; margin acute; testa shining dark brown, smooth.