Thank you, Jane It is also known as Florentine stitch. It has a long history, and I have seen the walls of a whole small room (well, a sort of closet/boudoir) covered with an old hanging made of it. It was in silk, in colours of dark greens and purples - really quite claustrophobic! If you Google "Bargello" and then choose the "images" option, you can see hundreds of examples of designs, some beautiful some frankly hideous.
I do bargello because my eyes are no longer up to the finer embroidery stitches. It is done on canvas in wool, and each stitch is about half-an-inch long. It bears the same relationship to fine embroidery as chunky knitting does to 2 or 3 ply. I have added a closeup on my profile pics to show the size of the stitches and the canvas, and how the stitches each overlap the ones in the previous row. It is easy enough for simple designs to be done by most children of seven or so, but the colours and the number of parallel stitches in each grouip of one, two, three or four (which determines the curves) can be arranged to make different patterns.