Da Vinci's flower of life

These two pages are ostensibly from the notebooks of one Leonardo da Vinci, and are identified widely around the interwebs as such, and I am assuming that this is true. HOWEVER, as far as I can tell, all references to them as da Vinci's stem from a single book—which I own—by an author that I consider extremely epistemologically challenged, and I don't necessarily trust his claim by itself. But it certainly looks like Leonardo's work, and the text appears to be right-aligned, which he tended to do, so pending further information I have no reason to doubt that he is in fact its author. What it means though I have no idea. It supposedly represents the Flower of Life. Everything represents the Flower of Life to some people though. One way or another is clearly a highly hexagonal work.