Vines; rhizomes linear or dense masses of potatolike tubers. Stems perennial, climbing, branching zigzag, terete, 5–9 m × 5–8 mm, woody, glabrous; prickles numerous, sparse or absent distally, flattened, rigid, stout, to 4 mm. Leaves evergreen; petiole 0.5–1.2 cm; blade green abaxially, drying to brownish green, narrowly ovate to ovate-elliptic, with 3 prominent veins, secondary veins obscure to prominent, 4.5–6(–8.5) × 2–3.5 cm, not glaucous, glabrous or minutely pubescent abaxially, base auriculate, pandurate, or rounded, cuneate at insertion of petiole, margins entire, apex acute to abruptly deflexed point. Umbels 3–8, terminal, axillary to leaves, 5–8 (–25)-flowered, loose; peduncle 0.2–1.5 cm. Flowers: perianth green; tepals: staminate 6–8 mm, pistillate 3–4 mm; ovule 1 per locule; pedicel 0.2–1 cm. Berries purplish maroon, purple, or black, ovoid to flattened, 5–7 mm, glaucous.
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An evergreen vine. It keeps growing from year to year. It can be 9 m long. It has prickles on the stem. The leaves are oval. and 8 cm long. The flowers are green and in groups of 3-8 flowers. The fruit are dark purple berries 6 mm across.
Dunes and sandy flatwoods, usually in full sun; at elevations from sea level to 100 metres. Woods, thickets, fence rows and streambanks.
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It is a warm temperate plant. It grows on coastal sand dunes.
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