Hexham scent (sweet clover, king island melilotus)
Melilotus indicus, Melilotus parviflora

It is an annual or biennial herb from 10 to 50 centimetres (4-20 inches) in height (rarely to one metre), with yellow flowers. Similar to Melilotus altissima Thuill. in general. The flowers are 2 - 3 mm long they produces a hairless pod of similar length.