Erect herb (0.25–)0.9–1.2 m. tall from a woody rootstock; stems ± stout, ferruginous tomentose to floccose-velvety and with scattered short red or blackish gland-tipped stiff hairs; tendrils absent.. Leaves digitately 3–9-foliolate, the upper sometimes sessile or subsessile, lower shortly to distinctly petiolate, less often sessile; leaflets usually sessile, linear-elliptic or oblanceolate to obovate-oblanceolate, 4–17.5(–27) cm. long, 0.4–7.5(–8.5) cm. wide, acute at the apex, cuneate to narrowly attenuate at the base, rather irregularly sharply serrate, glabrous or very sparsely pubescent above, densely ferruginous woolly-velvety beneath (white in life) later ± adpressed arachnoid-pubescent but venation not obscured; petioles 0–7 cm. long; petiolules 0–2 cm. long, often ± stout; stipules triangular-oblong, 1–3 cm. long, 0.5–1.2 cm. wide, acuminate, ferruginous pubescent to glabrescent.. Cymes terminal or axillary, corymbose, 6–25 cm. wide; peduncle (l–)4–8 cm. long; pedicels 1.5–5 mm. long; all axes ferruginous pubescent and main axes with scattered gland-tipped hairs; bracts and bracteoles linear to lanceolate, 2–5(–12) mm. long, ferruginous pubescent outside.. Buds oblong-cylindrical, 2–2.5 mm. long, slightly constricted at the middle, with some ferruginous pubescence at petal junctions at sides, occasionally with sparse gland-tipped hairs at apex but mostly ± glabrous or ± pulverulent.. Calyx 2.5 mm. long, ± entire, pubescent.. Petals yellow or green, tipped red, ± narrowly triangular, 2–3 mm. long.. Fruit red becoming black, broadly ellipsoid-subglobose, 8–9 mm. long 6–7.5 mm. wide, glabrous.. Seeds ellipsoid, 6 mm. long, 4–5 mm. diameter, with blunt basal projection, mid-ventral ridge broad and thick but rest obscured by the generally tuberculate-rugose surface.
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