Melilotus indicus, sometimes incorrectly written Melilotus indica, is a yellow-flowered herb native to northern Africa, Europe, and Asia, but naturalized throughout the rest of the world.

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.

It is an annual or biennial herb from 10 to 50 centimeters (3.9 to 19.7 inches) in height (rarely to one meter), with yellow flowers. Similar to Melilotus altissima Thuill. in general. The flowers are 2 – 3 mm long they produce a hairless pod of similar length.

It has a wide native distribution, ranging from Macaronesia and northern Africa, through Europe, and into temperate and tropical Asia. It is naturalized throughout most of the rest of the world, including the United Kingdom, the United States, South America, Australia, and New Zealand.

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