Herbs annual, erect, 50-70 cm tall. Branchlets puberulent (hairs simple) and rarely sparsely stellate hairy. Stipules lanceolate, ca. 3(-8) mm, villous; petiole as long as or slightly longer than leaf blade, stellate, puberulent and villous; leaf blade membranous, dimorphic; blades on proximal part of stem ovate-orbicular, 1.5-3 cm, those in middle 3-parted, ca. 5 cm, on distal part of stem nearly divided or 3-foliate, margin roundly dentate, stellate pilose and puberulent abaxially, pilose adaxially. Flowers solitary or arranged in sparse racemes, axillary. Pedicel 2-2.5 cm, pilose, articulate near end. Epicalyx absent. Calyx cup-shaped, ca. 4 mm, membranous, lobes 5, lanceolate, abaxially pilose and strigose, persistent. Corolla yellow; petals 0.6-0.7 cm. Staminal column ca. 0.4 cm. Styles 5, extending. Capsule broadly ovoid, ca. 7 mm, apex beaked; mericarps 5, endocarp thin, villous along ventral suture. Seeds with scalelike hairs. Fl. Oct-Dec.
Annual herb from 0·5–1·3 m. tall; young stems pubescent, pilose or tomentellous.
Leaf-lamina 2–12 × 1·5–10 cm., suborbicular to ovate in outline, varying on the same individual from not lobed to deeply 3–5-palmatilobed or incised, usually pubescent on both surfaces with additional longer simple hairs on the veins and 2–4-pronged hairs mainly on the lower surface, lobes sometimes secondarily pinnately lobed or incised, apex acute to subcaudate, margin bluntly toothed or crenate or irregularly lobed, base slightly to distinctly cordate 3–5-nerved; petiole up to 8 cm. long, pubescent or pilose or tomentellous; stipules 4–8 × 0·5–1 mm., filiform to narrowly linear.
Flowers 1–2 cm. in diam., white to yellowish, in few-flowered terminal racemes; peduncle 10–20 mm. long, pubescent or pilose or tomentellous, articulated near the apex.
Petals 8–12 × 4–6 mm., obovate, thin-textured and transparent.
Calyx pubescent; lobes 5–7 × 1·5–2·5 mm., narrowly lanceolate, joined near the base.
Staminal tube 5 mm. long; free parts of filaments 0·5 mm. long.
Seeds 1·5 × 1·3 mm., irregularly prismatic, minutely verruculose otherwise glabrous.