Basellaceae, the Madeira-vine family of flowering plants in the order Caryophyllales, with 4 genera and 15 to 25 species of herbaceous perennial vines, distributed primarily in the New World tropics. Members of the family have fleshy, untoothed leaves, tuberous rootstocks, and red or white flowers in branched or unbranched clusters. Madeira-vine, or mignonette-vine (Anredera cordifolia or Boussingaultia baselloides), and Malabar nightshade (several species of Basella) are cultivated as ornamentals. Malabar spinach (Basella alba) is a hot-weather substitute for spinach.