a herbaceous, erect annual the dry seed or grain of which is used as a source of food and feed. It is not a true cereal (it belongs to the buckwheat family, Polygonaceae) and is one of the very few plants, other than those of the Gramineae family, used for their starchy seed, which is processed as a meal or flour., ühe - ja mitmeaastaste rohttaimede perekond tatraliste sugukonnast