BUTTONHOLE STITCH is used to stitch hand-made buttonholes. These require more support because the button shank constantly rubs the edge of the fabric. It falls in the “knotted” category. It is also used to support the fabric in Hedebo embroidery.
Fragment of an embroidery century Red silk chain stitch with green outline on natural linen ground. The lower edge appears to have been cut. Border in a doublet design of animals and birds.