Herbs, annual. Stems decumbent to ascending, to 1 m, densely sericeous with white hairs and hispid with white or yellow antrorse hairs, rarely becoming glabrate. Leaves elliptic in outline, 1.5–7 × 2–3 cm; stipules 4–10 × 1–2 mm; leaflets 8–16(–20), elliptic to slightly obovate, 8–25 × 2–3 mm, middle pairs largest, surfaces appressed-hirsute, veins and margins sericeous, becoming glabrate. Pedicels 30–105 mm in flower and fruit, longer than subtending leaves (extending flowers well above herbage), slightly thickened distally, sharply bent at base and straight distally. Flowers 20–60 mm diam.; sepals persistent, lanceolate, 6–16 × 1.5–2.5 mm, 1/2 as long as petals, in flower longer than style, in fruit much surpassing mature fruit body but shorter than beak, also shriveling and turning brown, margins becoming strongly involute making sepals appear linear, hispid and strigose; petals marcescent, 2-colored, basally green to red, distally white to yellow or bright orange, fading white to orange, broadly obovate, 10–34 × 7–22 mm; stamens as long as style; anthers red, orange, rarely yellow (same color as petal base), ovoid or oblong, rarely linear, 2–3 mm; ovary ovoid, 2–3 mm diam., hairy; style cylindric but slightly conic basally, 6–8 mm, 2–3 times as long as ovary, strigose at base or to stigma base; stigma terminal. Schizocarps ovoid, 4–5 mm diam., strigose; beak cylindric, 6–18 mm, 3 times as long as fruit body, base conic, strigose at base or to stigma base; mericarps 3.5 × 1 mm, abaxially tuberculate, all tubercles rounded, less than 1 mm, sides slightly pitted, adaxial edge angled.
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