Jung might have seen a relation to circular maNDalas, which as per him were apparently everywhere: https://www.google.com/search?udm=2&q=circular+mandala

IIRC, circular maNDalas as per Jung draw your attention towards its center, which is the most important part of the maNDala. For Jung, the circular maNDala represented the self - the totality of the psyche - with the center representing its organizing principle. I've noticed how this pattern naturally arises in circular flowers, with the petals serving to draw the bee in to the center where the reproductive structures and nectar are located.

I realize that I am not really helping matters much, but thought would mention this anyway.