Apios fortunei is
a vine perennial that
grows to 2m or more. Stems wind themselves the other plants around
to climb and, on the other side, make rhizomes in the ground. Leaves
are pinnate compounds with 3-5 leaflets 4-9mm long and 2-6m wide, in
aｎ oval shape. Butterfly-shaped flowers are light yellow-green,
broad vexilla, small alae with tips tinging light purple, and
carinae bending inside. Bloom time: July-September.