Every Cathedral has its vesica piscis, often of enormous dimensions.
Mandorla, man-dor′la, n. an oval panel, or a work of art filling such: the vesica piscis.
Its form is that of the vesica piscis, one of the most common emblems of the yoni.
A myrtle was also a type, but of the female, because its leaf is a close representation of the vesica piscis.
Thus the following solution that I give to our puzzle involves the pointed "oval," known among architects as the "vesica piscis."
In this figure the cross is made by the intersection of two ovals, each a vesica piscis, an emblem of the yoni.
It may be that it was derived from that mystical figure of a pointed oval form, the vesica piscis.