Vines, erect to deflexed, branching, climbing to 1.5 m; roots tuberous. Stems slender, to 3 m, wiry, smooth to slightly ridged; cladophylls solitary at each node, broadly lanceolate to ovate, 15-35 × 5-15(-20) mm, leathery, with 20-24 parallel veins. Leaves membranous, 1-2 mm; blade broadly lanceolate. Inflorescences in axillary umbels, 1-3(-4)-flowered. Flowers bisexual; perianth campanulate; tepals white, with green median stripe abaxially, 5-7 × 1-1.5 mm; pedicel 5-8 mm, with hard, raised joint 1-3 mm above base. Berries red, 6-8 mm. Seeds 1-4(-6). 2n = 20.
Flowering spring--summer. Waste places, open forests, roadsides; 0--100 m; introduced; Calif.; s Africa.
Asparagus asparagoides is cultivated as an ornamental and has naturalized locally in southern Europe.