Not generally known (I have won many bets on this) is that France’s fleur-de-lis is not what you will find if you look it up. The example below is one of many.

Art•Heraldry

a stylized lily composed of three petals bound together near their bases. It is especially known from the former royal arms of France, in which it appears in gold on a blue field.

What the French symbol really is. is an iris. Wikipedia corrects this:

The fleur de lis is widely thought to be a stylized version of the species Iris pseudacorus, or Iris florentina. ... Lily (in Italian: giglio) is the name usually associated with the stylized flower in the Florentine heraldic devices.

Why am I citing all this? I have already blogged about iris here.  So when a new iris came into our garden via my Rosemary and I scanned it I had to find an excuse.