Japanese name: キバナツノクサネム（黄花角草合歓） Scientific name:Sesbania cannnabina
[Overview]
An annual reaching 3–3.5 m tall, seen in vacant lots and similar places.
The stem is erect, with few branches, and is sometimes tinged with brown.
The leaves are alternate and even-pinnately compound, 15–25 cm long, consisting of 20–35 pairs of leaflets.
The leaflets are linear to ovate, about 0.8–2 cm long, with entire margins.
Racemes 3–10 cm long arise from the leaf axils and bear 2–6 flowers.
The flowers are yellow, pea-shaped, about 1 cm long, and often have reddish-purple mottling on the outside.
The fruit is linear, 12–20 cm long and about 0.3 cm wide, and contains many seeds.
