Almonds - One of the most widely grown type of nuts. Produced on the tree Prunus dulcis (syn. P. amygdalus, Amygdalus communis). Sweet almonds (P. dulcis var. dulcis) are grown for their edible nuts which are important ingredients in many confectionery products, such as marzipan, macaroons and sugar almonds. Bitter varieties (P. dulcis. var. amara) are cultivated for their almond oils, which are used as flavourings.