Plants 0.5-3 m. Stems erect to sprawling, (rooting at tips), glabrous; spines at nodes 1-3(-6), (2-)5-15(-20) mm; prickles on internodes absent or sometimes numerous. Leaves: petiole 0.5-4(-6) cm, glabrous or pubescent and stipitate-glandular; blade broadly reniform to broadly ovate, 3-5-lobed, cleft 1/3-1/2 to midrib, 0.8-5 cm, base truncate to rounded-cuneate, surfaces finely pubescent or only between veins abaxially, lobes broad, rounded ternately, margins 1 or 2 times crenate-dentate, apex mucronate or apiculate. Inflorescences pendent, solitary flowers or 2-4(-5)-flowered racemes, 4-6 cm, axis glabrous or pubescent, flowers evenly spaced. Pedicels not jointed, 4-15 mm, glabrous; bracts lanceolate, 1.2-3 mm, glabrous or finely ciliate. Flowers: hypanthium white, pale greenish, greenish white, or cream, narrowly campanulate, 1.6-3 mm, glabrous, rarely very sparsely hirsute; sepals not overlapping, sharply reflexed, white or very slightly pinkish, narrowly oblong to narrowly oblanceolate, 5-8 mm; petals connivent, erect, white or very slightly pinkish with red veins, oblong to cuneate-obovate, not conspicuously revolute or inrolled, 1.7-3.2 mm; nectary disc not prominent; stamens 2.5-3 times as long as petals; filaments linear, 6.5-9(-10) mm, finely pilose; anthers cream to greenish, ovate-oblong, 0.8-1.6 mm, apex rounded; ovary glabrous; styles connate 1/2+ their lengths, 8-14 mm, pilose on proximal 1/2-3/4. Berries palatable but sour, yellow-green, becoming blue-black to purple, globose, 5.5-12 mm, glabrous. 2n = 16.
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