melilotus officinalis

Melilotus officinalis, known as yellow sweet clover, yellow melilot, ribbed melilot and common melilot, is a species of legume native to Eurasia and introduced in North America, Africa, and Australia.

Melilotus officinalis can be an annual or biennial plant, and is 4–6 feet (1.2–1.8 m) high at maturity. Leaves alternate on the stem and possess three leaflets. Yellow flowers bloom in spring and summer and produce fruit in pods typically containing one seed. Seeds can be viable for up to 30 years. ...