Plants 0.5-2 m. Stems erect or ascending (no short shoots), sparsely to densely glandular throughout with yellow, shiny, sessile, crystalline, round glands; spines at nodes absent; prickles on internodes absent. Leaves: petiole (1-)2.7-9.5 cm, glabrous or hairy, with scattered, yellow, sessile, round glands; blade reniform to orbiculate, 3-lobed, 2 proximal segments less deeply and very unequally lobed (rarely equally 5-lobed), cleft usually less than 1/2 to midrib, 2-12(-13.3) cm, base deeply cordate, surfaces with yellow, sessile, round glands abaxially, otherwise glabrous or copiously hairy abaxially, sparsely hairy adaxially, lobes broadly deltate, margins coarsely bicrenate-dentate, apex acute. Inflorescences ascending to spreading, 20-50-flowered racemes, 3-17 cm, axis thinly villous, flowers evenly spaced. Pedicels jointed, 0.6-8(-11) mm, short-villous, short stipitate-glandular; bracts lanceolate to linear, 0.5-3 mm, pubescent. Flowers: hypanthium white or green, saucer-shaped, widely flared, 0.6-1.5 mm, with sparse to dense, yellow, sessile glands and densely crisped-pubescent abaxially, glabrous adaxially; sepals not overlapping, widely spreading, white, triangular to ovate-lanceolate or oblong-elliptic, 3.4-7 mm; petals widely separated, erect to spreading, white or pinkish, oblong, becoming cuneate-flabelliform and obscurely 3-lobed distally, not conspicuously revolute or inrolled, 0.9-2 mm; nectary disc pale green, thin, partially covering ovary; stamens as long as petals; filaments linear, 1-1.1 mm, glabrous; anthers maroon, sometimes cream, oval, 0.4-1 mm, apex with small-holed callus, sessile-or stipitate-glandular; ovary sessile-glandular, stipitate-glandular, or sparsely hairy, rarely glabrous; styles connate 1/2+ their lengths, 2 mm, glabrous. Berries bitter, not palatable, black, ± glaucous, subglobose, 5.5-12 mm, glabrous except for yellow, sessile glands.
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Stem erect or ascending, unarmed; lvs shallowly to deeply cordate, 5-lobed, gland-dotted beneath and sometimes also minutely hairy; racemes erect or ascending; pedicels 3–7 mm, much exceeding the minute bracts; hypanthium above the ovary saucer-shaped, 1 mm; sep white or nearly so, oblong-elliptic, 3.5–4.5 mm, densely hairy outside; pet cuneate-oblong, 1.5–3 mm, obscurely 3-lobed; ovary usually with a few sessile, resinous glands, otherwise glabrous; fr black. Swamps and wet woods; n. Ont. to Alas., s. to Mich., Io., Wyo., and B.C. May, June.
A shrub. It grows 1-1.6 m high. The leaves are alternate and simple. They have 3-5 lobes. The leaves are slightly hairy and have gland dots underneath. They are 2.5-10 cm across. The leaves have a strong scent. The flowers are whitish and small. They occur in loose erect clusters. The fruit is a black edible berry.
Stream banks, moist woods, thickets at edges of mountain meadows, treed bogs, swamps, shaded rock outcrops, deciduous, mixed, and coniferous forests on moist to wet organic and mineral soils; at elevations from 300-3,300 metres.
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It is a temperate plant. It grows in swamps and shady woods.
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