Melilotus indicus

Melilotus indicus, sometimes incorrectly written Melilotus indica, is a yellow-flowered herb in the Fabaceae family. It is native to northern Africa, Europe and Asia, but naturalized throughout much of the rest of the world's temperate climate zones. It is a commonly occurring weed in disturbed habitats, with historical uses for forage and medicine. Common names in English include sweet clover (or sweet-clover), sour clover (sour-clover, sourclover), Indian sweet-clover, annual yellow sweetclover, Bokhara clover, small-flowered sweet clover, common melilot, small-flowered melilot, small melilot, sweet melilot, Californian lucerne and Hexham scent. In Australia and New Zealand, where it is naturalized, it is sometimes called King Island melilot or King Island clover....read more on Wikipedia.