What's next as we move up from the stem, exploring a flower of the aster family? The disc sits at the very end of the stem, and provides a connection for the flowers. It's a pretty basic job. The disc is hidden and not much appreciated for the creative work it can do to produce the overall effect of the flower heads. You know the little button you have left after you blow the dandelion seeds away? That's an aster family disc. Here we can see another, with the bracts of a spent Indian-tobacco flower spread wide to display it. Each of those little dots is the point where a flower and subsequent seed fastened.