Herbs, annual, 0.1–0.4 m, not glaucous, with taproot. Stems single, erect, sometimes branched distally, solid, short-stellate-puberulent and long, soft bristly-hairy, distally with multicellular trichomes intermixed, hairs erect. Leaves cauline, 3–5 per stem; stipules linear-filiform, undivided or rarely few-divided in robust plants, 3–5 × 1 mm; petiole 2–4.5(–6) cm, usually 1–2 times as long as blade; blades: proximalmost orbiculate, unlobed, 1–2.5 × 1–2.5 cm, base cordate with narrow sinus, margins crenate, apex rounded; other proximals rounded, unlobed or shallowly palmately 7–9-lobed, 2.5–4.8(–6) × 2.5–4.8(–6) cm, margins coarsely crenate, sinus wide to narrow, surfaces stellate-hairy; distals gradually reduced, orbiculate, more deeply 3-lobed, 1.5–2.5 × 1.5–2.5 cm, lobes obovate, apically widened to nearly truncate and narrowed to base, margins entire, apex 2–5-toothed, teeth subequal. Inflorescences erect to ascending, usually open, calyces not overlapping except possibly in bud, unbranched or infrequently branched, 5–12-flowered per branch, not especially elongate, usually 1-sided, 5–10 cm, to 5–15 cm in fruit, 1/2 times plant height; bracts linear-filiform, undivided or rarely few-divided in robust plants, (3–)7–11 mm, longer than pedicels, usually much shorter than calyx, not involucrelike, densely stellate-hairy and pilose-hirsute. Pedicels 2–4 mm, to 5–6 mm in fruit; involucellar bractlets absent. Flowers bisexual; calyx 8–10 mm, to 11–14 mm in fruit, lobe base within with conspicuous, purplish spot 1–2 mm wide, hairy, hairs glandular and non-glandular, multicellular as in inflorescence; petals dark pink, without pale veins, with or without reddish basal spot, 10–22(–26) mm; filaments connate to apex of tube; staminal column 3–5 mm, hairy, hairs relatively long, simple; anthers white; stigmas 4 or 5. Schizocarps 5–7 mm diam.; mericarps 4 or 5, usually tinted pink when fresh, 3–4 mm, usually glabrous, back reticulate-veined, pitted, with prominent midvein, mucro absent but with 1–5 minute bristles in its place. Seeds 1.5–2 mm.
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