The dry fruits are known as coriander or coriandi seeds. In India they are called dhania. The word coriander in food preparation may refer solely to these seeds (as a spice), rather than to the plant itself. The seeds have a lemony citrus flavour when crushed, due to terpenes linalool and pinene. It is described as warm, nutty, spicy, and orange-flavored. The variety vulgare or macrocarpum has a fruit diameter of 3–5 mm while var. microcarpum fruits have a diameter of 1.5–3 mm. Large fruited types are grown mainly by tropical and subtropical countries, e.g. Morocco, India and Australia and contain a low volatile oil content (0.1-0.4%). They are used extensively for grinding and blending purposes in the spice trade. Types with smaller fruit are produced in temperate regions and usually have a volatile oil content of around 0.4-1.8%, and are therefore highly valued as a raw material for the preparation of essential oil. It is commonly found both as whole dried seeds and in ground form. Seeds can be roasted or heated on a dry pan briefly before grinding to enhance and alter the aroma. Ground coriander seed loses flavor quickly in storage and is best ground fresh.