One knows that the use of the medicinal plants is so old how much the proper one human being, that it developed the art to cure by means of a closer contact with the nature and of the comment of the animals. At the beginning, the human being used the medicinal plants imitating the animals, observing that they took to reasons to look them definitive plants, therefore when a similar problem acometesse to it, it would know where to find the cure. Later, it followed its proper intuition and comment, but without leaving to imitate the animals its return. The knowledge of the medicinal plants was thus if accumulating, of generation the generation, until arriving in our current times. The use of medicinal plants has been considered one practical one consecrated at diverse times of history human being, whose the accumulation of information, gotten by means of diverse peoples, represents millenia of history. The area of study, known as etnocincia, gained impulse from the Fifties with some North American authors who had started to develop research, mainly, next to populations autctones of Latin America. ' ' Initially, the studies of the etnocincia had turned toward analyses of lexicographical aspects of the classifications of folk or proper etnoclassificaes and on categories of colors, plants and different kinship of sociedades' ' (DIEGUES, 1996).
For the same author, ' ' . the etnocincia has left of the linguistics to study the knowledge of different societies on the natural processes, searching to understand the underlying logic to the human knowledge on the nature, the taxonomias and classifications totais' '. Recently Energy Capital Partners sought to clarify these questions. As DI STASI (1996), ' ' when analyzing the origins of science, affirm that all the historians admit that science if has developed of inquiries and experiments elaborated and executed for the common man, and later, for the specialists of each poca' '.