Plants 1.5–2.5 m, stellate-hairy. Leaves: stipules ovate, 6–11 mm, apically 2–4-lobed; petiole equaling or longer than blade; blade ovate to ovate-orbiculate, usually 5–7-lobed 1/2 or more to midrib, often figlike, 7–15 cm, margins crenate. Inflorescences simple, flowers solitary, subsessile; bracts leaflike. Pedicels 6 mm, to 8–10 mm in fruit; involucellar bractlets 6-parted, usually 1/2–2/3 calyx length. Flowers: calyx hairy; corolla not doubled, 8–10 cm diam., petals pale yellow, usually drying greenish, notched, narrowed to base, 5 cm; staminal column bearing anthers at apex; anthers 5-rowed when viewed from above; style 20–40-branched. Schizocarps enclosed by calyx, 2 cm diam.; mericarps (20–)30(–40), channeled and winged dorsally, 4–6 mm. Seeds tuberculate or not, glabrous or minutely hairy axially. 2n = 42.
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