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Caraway (Carum carvi), also known as meridian fennel, or Persian cumin, is a biennial plant in the family Apiaceae, native to western Asia, Europe and Northern Africa. The plant is similar in appearance to other members of the carrot family, with finely divided, feathery leaves with thread-like divisions, growing on 20–30 cm stems. The main flower stem is 40–60 cm tall, with small white or pink flowers in umbels. Caraway fruits are crescent-shaped achenes, around 2 mm long, with five pale ridges.

Citrus is a common term and genus (Citrus) of flowering plants in the rue family, Rutaceae. The most recent research indicates an origin in Australia, New Caledonia and New Guinea. Some researchers believe that the origin is in the part of Southeast Asia bordered by Northeast India, Burma (Myanmar) and the Yunnan province of China, and it is in this region that some commercial species such as oranges, mandarins, and lemons originally came. Citrus fruit has been cultivated in an ever-widening area since ancient times; the best-known examples are the oranges, lemons, grapefruit, and limes.