Ladder Stitch is a kind of embroidery stitch used on plain-and even weave fabrics. It has a ladder-like appearance, hence the name, and it is used as a border stitch or to fill a long, narrow shape of varying width. This stitch should always be worked on
Lyda: "This is the first real embroidery stitch i learned, i used it on the seams of my apron dress." Vandyke stitch, several extant things have this on them in some form or another (see Medieval Clothing and Textiles vol VIII?