Work over an even number of stitches. Rows 1 and 2: Knit Rows 3 and 4: (K1, P1) across Repeat rows 1 - 4.
So then it's sort of a seed or moss stitch in the middle?
I haven't done a swatch yet but it appears to be a ridge of garter stitch with ribbing in the middle as it is over an even number of stitches. Might be interesting to try it, also, on an uneven number of stitches, then you would get a different effect in the middle. I have a feeling I have done this stitch in the distant past but not with that name.