Herbs, annual; taproot tapered, soft or ± woody. Stems erect or ascending, occasionally decumbent, moderately or profusely branched, primarily distally, 1-5 dm, minutely puberulent with bent hairs basally, glabrous or minutely puberulent distally. Leaves mostly in basal 1/2 of plant; larger leaves with petiole 4-8[-15] mm, blade broadly ovate or oval to lanceolate, 10-21[-35] × 6-8[-13] mm (distal leaves smaller, proportionately narrower), adaxial surface usually glabrous, rarely minutely puberulent, abaxial surface paler than adaxial, glabrous, neither surface punctate, base round [obtuse], margins shallowly sinuate, apex acute, obtuse, or round. Inflorescences terminal or axillary, forked ca. 3-6 times ± evenly (or clearly unevenly), diffuse, with sticky internodal bands; branches usually terminating in umbels or flowers borne singly, usually well beyond leaves. Flowers: pedicel 0.3-4.5 mm; bracts at base of perianth quickly deciduous, 2, linear-lanceolate to lanceolate [ovate], 0.5-0.6 mm; perianth whitish to pale pink or purplish, campanulate beyond constriction, 1 mm; stamens 2-3, included or barely exserted. Fruits 1-7 per umbel, straw colored or gray-brown, obpyramidal, 2.5-3.1 × 1.3-1.9 mm (l/w: 1.6-2.1), base stipelike, apex round-truncate, glabrous; ribs 3-4(-5), acute or winglike, tapering to pedicel, slightly rugose or undulate near sulci; sulci 0.5-1 times as wide as base of ribs, coarsely transversely rugose, smooth or very faintly papillate.
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