Those are thyme leaves (from the window box near my kitchen door). I also used oregano, tarragon, and chives. But I'm getting ahead of myself.
I've felt the urge to make fresh pasta lately, and I've seen, over the years, pasta with herb leaves pressed between the pasta layers. So, in that fresh pasta mood, and with PLENTY of herbs (though not all are ready) to choose from, I set to work.