Apios fortunei, commonly known as hodo, hodoimo, groundnut, or potatobean,[1][2][3][4] is a tuber-forming member of the bean family.

[3] The flowers are whitish green, sometimes tinted light yellowish with a red-to-purple wing petal edge, or sulphurous green with rosy wing petals;[1][3] they form pseudoracemes or terminal panicles, 6–26 centimetres (2+1⁄2–10 in) long.

[3] The fruit is a linear legume, 7–8 cm long and 5–6 millimetres (3⁄16–1⁄4 in) wide.

[3] Chemically, the tubers contain starch as their predominant carbohydrate, along with smaller amounts of sucrose and glucose, and almost no fructose.

[1] It is one of three species in the genus known to produce edible tubers, although it has generally been considered an emergency food source as well as a medicinal plant.