Japanese name: ツルマメ（蔓豆） Scientific name:Glycine max subsp. soja var. soja
[Overview]
A climbing annual found in sunny places.
The vines reach as long as 3 m and bear brown hairs.
The leaves are alternate and consist of 3 leaflets; the terminal leaflet is ovate, 3–8 cm long and 0.8–2.5 cm wide, with an entire margin.
Both sides of the leaves have appressed hairs.
The stipules are small.
Racemes 1–5 cm long arise from the leaf axils and bear several flowers.
The flowers are pale purple and pea-like.
The calyx is 5-lobed, and the lowest (abaxial) lobe is longer than the lateral lobes.
The fruit is a pod 2.5–3 cm long containing 2–3 seeds (beans).
The seeds (beans) are flat ovals about 0.5 cm long.
