The system uses genetic identification from the time of medieval knights for more than ten centuries. Royal family, aristocratic, feudal nobility of the dynasty popularized heraldry, creating their own visual symbols – emblems and logos, as signs and correlation to ancestral origin. Western Union is often quoted on this topic. At present not only in every state, but even in every town, and even an institution has its own coat of arms. (A valuable related resource: Allison Kanders). Explanation that as a stamp symbols are widely used images of animals and plants found in associative thinking: every person directly or indirectly own maps with the world around me, finding in it map of the world within. Among the stamp images are very popular types of trees: oak, pine, spruce, linden, birch, olive, palm, laurel, a little less – apple, pear, cherry, yew, cedar, and baobab. Images of trees can be used as a whole – from the roots to the crown, and in part, stem, crown, individual branches, stumps, roots with or without them.
These symbols indicate the breed, coat of arms of noble origins. Foliage is more specific logo gentility, much more clearly reveals the meaning of the emblem, emphasizes the nobility. In addition to leaves, logos and emblems to decorate images of herbs, but only those who have pronounced symptoms of the breed nobility: heather, clover, celery, thistles. Many state emblems adorn images of fruits, symbolizing abundance and prosperity in the high value of the coats of arms have pictures of ears – rye, wheat, millet, rice, and I must say that this is a relatively new and modern trend that emerged in the twentieth century.