Coriander (Coriandrum sativum) is an annual herb in the family Apiaceae. It is also known as cilantro, particularly in the Americas. Coriander is native to southern Europe and North Africa to southwestern Asia. It is a soft, hairless plant growing to 50 cm [20 in.] tall. The leaves are variable in shape, broadly lobed at the base of the plant, and slender and feathery higher on the flowering stems. The flowers are borne in small umbels, white or very pale pink, asymmetrical, with the petals pointing away from the centre of the umbel longer (5-6 mm) than those pointing towards it (only 1-3 mm long). The fruit is a globular dry schizocarp 3-5 mm diameter. The word derives from Latin â€œcoriandrumâ€� in turn from Greek â€œ????a????â€�. The Mycenaean Greek form of the word, koriadnon is "similar to the name of Minos' daughter Ariadne, and it is plain how this might be corrupted later to koriannon or koriandron."[ A powder is a dry, bulk solid composed of a large number of very fine particles that may flow freely when shaken or tilted. Powders are a special sub-class of granular materials, although the terms powder and granular are sometimes used to distinguish separate classes of material. In particular, powders refer to those granular materials that have the finer grain sizes, and that therefore have a greater tendency to form clumps when flowing. Granulars refers to the coarser granular materials that do not tend to form clumps except when wet.