Semences A and B "Semillas" is a series of engravings and lithographs that tries to honor Mother Nature for her fertility and ability to reproduce, making her way through adversity by adaptation". The author invents and isolates the grains to put them in value and develops a hypothetical evolution in their growth. His apparent simplicity in the design of each of these seeds is underlined by the reuse of different plant elements, manipulated or of industrial origin, their variations conditioning the expression of life.