Let's begin the term with History.
Stitch #48 is an Elizabethan Stitch, the Detached Up and Down Buttonhole Stitch.
French name: point de feston filet
I found the stitch here at Baroque Embellishments, and I have never seen it before. Although it looks easy and great for filling in areas where you want a lot of texture, I will simply use it as a thick outline.
Work it like this:
First make a line of Running Stitch, (I did mine from right to left).
Take the needle under the first rung of the Running Stitch, without biting the fabric. Keep the working thread under the needle.
Continue in the same way for each rung of the Running Stitch line.
When you come to the end of the line, anchor the thread just above the stitched line.
On my Aida sampler I got a nice braid-like line.
Let some nice 'Elizabethan Braids' join the other stitches.
Experiment with different thread in the foundation Running Stitch and the Detached Up and Down Buttonhole Stitch.
Experiment with different tension.