Porcupine Stitch from Barbara Walker's Second Treasury of Knitting Stitches
The yarn is from the Saxon Merino farm, also the subject of a prior post. This pattern - 9 rows, is easy enough to memorize, though it has patterning on every row. Since it has an odd number of rows, it is reversible (the pattern reverses every 9 rows). I think the top and bottom edges will have similar appearance too, so that the last few rows can remain in pattern. I started with 4 rows of garter stitch, in purl, and will finish with the same before binding off. The six-stitch side borders are also knit in purl stitch. I'm using a row counter, because otherwise, it would be confusing to keep track of the rows. I have used one skein of the yarn so far, and have knitted about 6 inches from the second one.
Here's another view: